I've never fully trusted the hand pegs from this line because they're so stubby compared to every other line. I feel a lot more secure swapping hands on most other lines because there's more THERE there to pop and swap (and the plastic is less brittle, too).Yeah, I'm pretty sure they're compatible. I had the older leather hands pack and they worked with 1.0 bodies, all the pegs look pretty similar.
Although, one thing that always worries me with this line is handswapping, which is weird, because swapping entire limbs/torsos isn't an issue. The pegs always feel like they might separate from the hand if I caught them on a bad day, but hot water does make it a lot easier.