Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: How does this Black Rapid work for hiking versus the OP/TECH...if anyone has had the experience...Nikon D 5100 70-300 mm
Document: Wear this to carry your camera and you'll never go back to using the traditional neck strap. With this Black Rapid sling, I can carry my Canon 6D and a 70-300 Zoom lens (about 8#) all day long without feeling sore at all, and it makes it tremendously easy to take pictures, one handed or two as you're walking along or hiking. The connection to the tripod screw hole appears very secure, but just for safety, I purchased a Canon wrist strap (WS20) and when I'm wearing the sling, I connect the wrist strap to the strap latch, as a precaution.
I purchased this because I like to carry my Nikon D7000 with a 300 mm lens when I walk my dog and the neck strap was just too darn uncomfortable, and since I am a big man (6 ft and 300 lbs) over my shoulder was not an option with that strap. When I ordered the Black Rapid I actually put the extension on the order but didn't pull the trigger hoping the shoulder strap would fit fine on a big man and indeed it fit the bill perfectly. Upon receiving the BR RS-7 I made the strap as long as it would go and adjusted the shoulder strop to fit my shoulder, then attached the camera, strapping it to the lens instead of the camera and the thing hangs perfectly at my waist to where I can reach it comfortably with my hand.
Since this strap nominally mounts using the camera's tripod socket, it would mean that I'd have to remove the quick release plate to use the strap, then re-mount the plate for tripod shots. Not exactly ideal.The solution is the OP/Tech USA Utility Loop Connector. These inexpensive parts loop through a slot in the quick release plate (mine is a Really Right Stuff model) allowing you then to clip the Black Rapid Strap to the loop instead of the camera's tripod socket. You might feel that the OP/TECH Utility Loop appears flimsy, but it is quite strong.
I saw a recommendation on the internet of creating a safety tether using a combination of OP/TECH accessory straps (buy both part number 1301062 and part number 1301012). Using two of these parts its easy to create a quick disconnect safety strap that can be attached to your camera's normal strap attachment point on one side, and the metal buckle portion (not the snap ring) on the black rapid end. Buys some extra piece of mind.Ok, that being said, I check the tightness of the tripod screw end of the black rapid before each day's use and have *never* found it loose, although this safety strap saved my bacon once when shifting from monopod to hand use at night -- I had left my safety strap attached while on the monopod (quick release plate mounted to monopod now, not black rapid strap) and somehow in disconnecting and collapsing my monopod in the dark I was surprised to find my camera hanging only from its safety tether.
Good camera strap but it creates problems when you use it with a tripod. I was able to use the Black Rapid D-Ring accessory after modifying Arca Swiss compatible quick release mounts on a Vanguard Tripod system. As far as using the strap, I am easily able to carry heavy cameras with lenses with ease. I no longer have a camera strap tugging at the back of my neck. I sure wish Black Rapid made a Arca Swiss compatible quick release. That would solve a lot of problems for folks with tripods and such a universal device would work for most photographers who use tripods.
Finally, my husband and I have four different camera bodies between which we both switch on a regular basis, and a couple extra attachment screws make it the work of a moment to clip out of one camera and into another.These straps are incredibly sturdy, more comfortable than the body kit straps, look very nice and work great. I can highly recommend Black Rapid straps to anyone in the market.
A 40D and a 70-200 f/2.8 lens together weigh about 5 pounds, and that gets remarkably fatiguing if you're carrying it around your neck, no matter how well padded the strap is. A sling-strap like the Black Rapid RS-7 moves that weight to your shoulder, and because the connector slides freely along the strap, it doesn't slow you down at all when you grab the camera and move it into shooting position.I considered theOP/TECH USA 3501242 Utility Strap-Sling Connector for Fast Access to Cameras and Binoculars - Neoprene  (Black), but rejected it because the connector uses a plastic quick-disconnect and the sliding portion was a plastic loop, which didn't look as if it would slide as freely as the RS-7's metal loop.One thing I don't like about the RS-7 is that it's intended to connect to the camera tripod mount.
I purchased this strap right before going to Paris, France for vacation. I wanted to carry only one lens, my camera and a spare battery and memory card. I can't say enough good things about this strap system. I purchased it and the Joey II to hold the battery and memory cards. I use a Nikon D700 along with the 28 to 300 mm lens which is large and heavy. We walked all over Paris for 7 days and I never had a problem with my neck or shoulder. This product just flat out worked great.
I've heard a lot of bad things about letting the camera hand upside down, Nikon wont make the warranty valid, let that be a warning. But the strap does work wonderfully! It is comfortable compared to the stock strap, the material are almost military grade. Fast acces to the camera, no damage to it and I've used this strap on a nikon D3000 and D7000, both working like a charm and both using a 55-200 lens.Black Rapid is THE choice on fast straps, if you get the extra pouches, everything fits just right.
I carry around a Nikon D7000 with Battery Grip and 70-300 lens attached, most of the time. This strap redistributes the weight and makes carrying your camera more like a messenger bag.Regular camera straps that go around the neck become uncomfortable, but I can wear this all day with no issues.Don't leave home without it!
Answer: I'm not familiar with the OP/Tech. If hiking involves steep incline climbing, the Black Rapid strap may not be suitable since the camera hangs at your side around the level of your beltline. You would end up having to secure the camera with one hand to keep it from swinging around.