Yeah, I've known some pretty good deadlifters who didn't squat, just deadlifted. I think for most it probably doesn't work that well. And most of those guys were a little older and had spent some time building a good squat in the past and for whatever reason, abandoned the squat and just deadlifted. Probably a combo of not wanting to squat in competition due to age (understandable) and a little bit of not giving a fuck.