Review (3/5): Mediocre for me, but YMMV
I tested these under a number of use cases and noted how long the blades remained effective (clean shave, non-nicking) for:
[benchmark: 4-5 good shaves per edge with Astra Platinum]
Dry shave (2/edge)
Dry shave after a hot towel (2-3/edge)
Wet shave - soap (2-3/edge)
Wet shave - cream (3/edge)
I personally prefer to dry shave after a hot towel in the interest of minimizing hassle on frequent camping trips. Worth noting, I have a medium-coarse beard and sensitive skin, so I prefer very sharp blades rather than medium-sharp like these. I'm not really impressed with the polymer coating - it doesn't glide as well as blades using other finish coats (and notes on the blade that you're not to wipe dry - likely as it'll only accelerate roughening the polymer coat to to the skip-and-nick stage).
Sadly, it only took me one pack of blades to determine these aren't for me. The second pack I'll relegate to emergency spares, for when some shave is better than none.