I have a 22/45 that I traded my MKII for,put a hogue grip on it and love it.Just used open sights for a while,but had to have a red dot.It makes it a little top heavy but not unnatural in the hand to shoot.It is more accurate than I am free hand & w/a rest right on par w/my 10/22.It is a little hard at first to strip and clean but follow the directions in the owners manual,then do it again,and again,and you'll get the hand of it.
Not too crazy about the poly.but that's just less too rust and clean.
Sorry,don't know about the buckmark but that might be a good excuse to add to the collection.....Yeah you'd better get both.