Can anyone confirm whether the only difference between the Kuryakyn Ergo II and Ergo III highway pegs (apart from the $80 US price difference) is that the II model stays in place where you set them while the III moves up and down with foot pressure on the peg. For a guy with a shorter inseam (30") I'm not sure there would be much upside going with the III model -- the ability to move the peg downwards seems like something only taller guys are going to benefit from. Any thoughts? Thanks!