Well it's hard to say whether they've improved strength wise as I'm not deadlifting or doing RDLs currently, but they've definitely grown as I'm seeing more of a curve out when viewed from the side (actually had a girl at work compliment me on this when wearing some slim jeans). I'm also much stronger coming from a dead stop at the very bottom of the movement, maybe due to the fact that I'm pausing at the bottom, maybe because I wasn't training the very end of the range of motions with squats previously, because at that point where the hamstrings are touching the calves I can't quite keep a neutral spine (my squats are still well below parallel). I figure it's fine to go that deep unweighted though.
Of course, another possibility is that I've simply been doing more volume with pistols than I was when I was squatting and deadlifting, and that's the reason for the growth.
Of course, another possibility is that I've simply been doing more volume with pistols than I was when I was squatting and deadlifting, and that's the reason for the growth.