BranCrackerDo you have one and speaking from the experience? I bought it with the sole purpose of it replacing my traditional leather back pocket wallet because I was tired of the bulge when sitting, it would be quite a disappointment for me if this would be uncomfortable wear in the back pocket. I did not see any info neither here nor on the ridge official website that this is not intended to be used in the back pocket.
makatsI've had one (with the clip) for about 4 months so far, and consistently have 5-6 cards in it. It's fine sitting on soft surfaces like an office chair or your car seat. It would certainly become more noticable when sitting on harder surfaces, or as you add more cards.
BranCrackerI would think it'd be fine with the cash strap in terms of comfort in a back pocket, though I'm not sure how the integrity of the wallet will hold up if it's frequently under the pressures of body weight and shifting movements when sitting.