The wrist area is easier to rest on the desk surface. It may sound ridiculous, but it was very comfortable to type on my Lightsaver. I used to be a big fan of low profile Filco keyboards with legs down exclusively, but it's not the only way to type comfortably.
P.S.: you may not want to use SA or OEM profile keycaps on larger incline keyboards or taller cases. I stick with Cherry for the lower profile.