In reply to DaveHK:
Hi Dave, firstly how about "Sugru"? Check out Sugru.com
Otherwise, reading about on the net, there are references to the the fact that the grips on the Switches are bigger as it allows space for gloves and the non adjustable rests are also a plus as there is no weak point that might break.
Personally I don't have dinner plate hands, so get along ok with tools with smaller grips. I have two sets of Nomics, one trashed set with dry tooling picks with the handle set to "M" and a 'Sunday best' set with cascade picks and the handle set to "L" to accommodate winter gloves. So far in 7 years of use, I have not managed to break off or damage an adjustable rest yet.....
Have you spoken to DMM about this? I suppose they may say that on slabby or vertical stuff you will have your feet to take the pressure off your pinkies and on the really steep stuff, the tool is rotated enough to spread the weight along most of the grip and so relieve your pinkie fingers even if your index finger is not in the trigger, but that still does not address the issue of security that you highlighted.
Sugru is pretty amazing stuff and proportedly copes well with the cold too, plus you can mould and customise the shape to your hand.
Good luck
Paul