As with any saddle, on a saddle with a cut out your sit bones should sit firmly on the saddle - the cutout (or on some saddles just a groove) should take any pressue still present on your softer bits away. If you are falling into the cutout I'd say its too large! (the cutout that is). What it means for me is no more mashed soft tissues. Some people report rubbing on the edges of the cutout, but I haven't had any issues with that.