I bought a used 686-6 last fall. It came with Hogue Bantam grips which is probably what it shipped with. I have been wanting to dress it up a bit and came across a set of Pachmyer Renegade Laminated wood grips on Ebay for only $31.10, shipped. They have a really nice finish, good checkering and fit the gun very well with no gaps. I like the way they look, but they are a bit too bulky for my small/medium sized hands. I'll have to see how they shoot for a final verdict
Pictures of the gun with original grips and the new ones
Pictures of the gun with original grips and the new ones