I've worked out at two different PFs, and neither had kettlebells. But, that was a few years ago, so maybe it's a new thing.

I could make it happen with 30lbs, but normally I do swings with a 35 and goblet squats with a 45. I recently bought a 15lb, 2-25lbs, a 35 and a 45, at home, and I can get it in. I may never go back to paying a gym membership.