[Google Pixel 2 XL Accessories] KHANrad_SIN:
I got both cases so I figured I'd compare them since they're commonly regarded as competitors. I"ll break it down into categories specific to these cases.

Materials

They both have this fabric/cloth kind of material. The Google one feels more like a nylon mesh while the Incipio is more of a starched jeans kind of feel. The Google one has the material going all the way around the case while the Incipio is only the back with rubber sides for a two tone look. In terms of grip I prefer the Incipio because of the rubber edges. In terms of aesthetics I prefer the Google one because the material covers more consistently but it's more slippery to me because it doesn't have a rubber edge like the Incipio does. One thing to note though is that when I received the Incipio there was some fraying already on the edges where the cloth meets the rubber. It felt kind of sharp since the cloth material is kind of hard and it was just annoying when holding it so I took a nail clipper and clipped off the very tiny hanging pieces.

Shape

The Google case has rounded edges which makes it even more slippery while the Incipio has flat edges, giving a sharper edge, making it easier to grip. The Google case is also slightly wider because of the curved edges than the Incipio as seen in the attached picture (the Google case is behind the Incipio and if you pay attention to the top edge you can see the Google case standing higher when placed on a table on its side), so for me since I have smaller hands it makes it even harder to grip as well. Now although the Google case is wider it is much thinner than the Incipio as seen in another one of the pictures (Google on left and Incipio on right) and this makes a huge difference for me. The Google one is wider but only by a bit while the Incipio feels MUCH thicker. Doesn't look like much in the picture but just a few mm can make a big difference. For example I use a magnet mount in my car but because the Incipio is so thick the magnet doesn't stick as strong and I get nervous about it falling, it still sticks but I'm just paranoid about it. No such issues with the Google case. Also the Incipio has a bigger cutout for the fingerprint scanner and the edges of the cutout are slanted which makes its easier to do the swipe gesture without your finger running into something like in the Google case where it's just a blunt edge.

Buttons

The buttons on the Google case feel great, some of the best I've seen. Of course the material feels different from the bare buttons but the tactileness and actuation are fantastic, it feels like the actual button, maybe even better. On the other hand the Incipio buttons are very stiff. They're not mushy because I can still feel a click, but you have to press down pretty hard compared to the Google case. Sometimes I would even activate the squeeze feature just trying to press the buttons.

Protection

Obviously the Incipio takes the cake for this one. It's thicker so it provides more protection in that sense, but also because it protects the bottom part. For some reason the Google case has a huge cutout in the bottom leaving it exposed (maybe to make it easier to put on? or maybe to make it more compatible with different USB C cables? idk). I use the stock cable and an aftermarket one perfectly fine on the Incipio, no blocking. The Incipio has full coverage all around. They both have lip protection around the edges but I think the Incipio is slightly higher.

Price

Google case $40, Incipio $35. A 5 dollar difference, not much else to say. Get what makes you happy.

Final verdict, Google case wins. The Incipio is just too thick for me, almost reminds me of a lighter otterbox and I'm not really a fan of those. I'm considering returning the Incipio or just keeping it for when I need a thicker/more protective case.

Hope this helps, YMMV.

FYI if you're wondering what the metal thing in the pictures is on the cases, that's the Spigen kickstand.