My 315/70s on stock wheels also tuck in nicely. I've taken it off road and haven't noticed any rubbing. I'm not an expert but I think it's all in the choice of wheels. I personally don't like the look of the tire sticking out past the fender but to each their own.
I've seen 5 other Gladiators on the road around here. Only one of them was a Rubicon, and one was a Sport. Overland's seem to be the way most people are going. On a related note the dealership I bought my wife's JLUR from had quite a few on the lot and said they had already sold about 2 dozen...
I think the badge on the tailgate is too small. It looks like an afterthought. I would love to see some repalcement badging that still follows the Rubicon color scheme that says Jeep (only larger) or keeps the size the same but says Gladiator instead.
Maybe I'm just used to it? Or maybe not all Wildpeaks are created equal. There's plenty of people running them with no issue and there's also people with Sports and Overlands that comment on how much it likes to wander.