I have a Wave, not a Swisstool. I'm coming around to thinking that exterior-opening, non-clumping tools would be an incredible feature. I don't like the finish on some of the Swisstool's tools, but its other features would probably cinch it for me.
Of course, the Swisstool is bigger and heavier, right? Carry the Wave when you want to cut down on weight.
Joe