For skinning I just use a regular drop point folding hunting knife or my Victorinox boning knives if sharper and available. I have one of those skinner/guthook knives and rarely used it..looks cool but just get use to a couple of knives and stick to them I guess.

For caping of the skull I do use a Marbles caping knife, as I refer a smaller blade to work around the pedicales, eyes and ears.