The first DW I bought had the original, non-medalion wood grip like Stonebuster's, & I didn't really like it since I don't have oversized hands, so I found a set of Pachmayr presentation grips at Numrich Gun Parts, which don't look as good as wood, but they look OK & they are great from a utility perspective. I also ended up buying a set of Hogue Pau Ferro wood grips for it and I think those are excellent grips.
My other model 15 had the original DW medalion, walnut, target grips and my model 22 had the original W medalion, walnut, target grips as well so I didn't have to make any changes.