These are my first platform MTB pedals after riding cleat style setups for 20+ years. I will stay with this style from here on out. The grip is excellent for both climbing and downhill runs. I did not remove any of the pins, just used the pedals as is, out of the box. I ride dry alpine tundra/forest terrain and haven't slipped off the pedals at all, even with the occasional creek crossing. I wear a size 12 boot and the platform size is quite adequate.
I've used these pedals for the last couple of months. Paired with my freerider pros they are very grippy and have great contact. The convex platform actually does seems to result in reduced and less hard pedal strikes which has been a pleasant surprise. I would definitely purchase them again.
I was still using good old toe straps for years. Always thought my shoes would slip on a flat pedal. Boy was I wrong! Even with a hard soled shoe these are fantastic. No worries that my shoes may slip. Must be absolutely awesome with sticky sole shoes. GREAT upgrade!