At my gym we do walkovers for our floor drills on both legs. A front handspring isn't really the same thing as a front walkover, and if there is no block then there's a problem, so if you hurdle with your dominant foot in front you should be fine. I find that bad-leg front walkovers really hurt my back, as do switching-leg front walkovers, but I can do both and most people at my gym around level 5 can do both, so it shouldn't be hard for you to learn your dominant leg if you think it's really going to be a problem. I guess you can't connect to a cartwheel or round-off, which could be a problem if you wanted front acro on beam.