I can't imagine that there would be too much different, I know lots of gaited people who ride in a "non gaited" saddle. Again, the flare in the front bars (which many gaited saddles have) might be the biggest difference, but what horse couldn't use good shoulder room?
. Tucker was designed initially for gaited horses, but I know many non gaited folks ride them. Also, many gaited saddles may be shorter length to accommodate a shorter back, but again, I cannot imagine that that wouldn't also describe many non gaited horses.