I don't know about the classic style, but I have 12 S&W revolvers equiped with the finger groove Eagles. I have them in walnut, rosewood, and ebony, but have decided that the ebony isn't black enough, at least it seems so to me, to justify the additional cost over rosewood.

I have them on 18 (x2), 19, 25, 48 (x2), 66 (x3), 624 (x2), and 629

JEff