Berkhamstead GC in Herts, England, is completely devoid of sand bunkers. They have grass bunkering and it is used to great effect.
I believe it is less intimidating to a high handicapper, however depending on the length and thickness of the grass, places a higher demand on shotmaking to get close to the hole.
Grass bunkering that is varied from short to almost rough-like, would, IMHO be extremely interesting.