I was thinking the same thing. That scope is awfully high. As for the scope getting fouled from the pan flash, just put a layer of camo or electrical tape one prior to shooting then take it off when done. The lens should wipe off easily with a lens cloth. As far as putting a scope on a sidelock...whatever trips your trigger is fine. Don't worry about what others think.
I'm waiting for someone to put a laser sight on their sidelock...