Jim glad you got the SAA grips I sold you. As far as the one piece,I agree that they look great,and usually feel wonderful,at least in wood.
Is the maker "local" to you(?)as usually,these one piece stocks really require some hand fitting,and the gun,at least the back strap/trigger guard assembly,but preferably,the entire gun should be used to insure a great fit. If not,you will have some high/low spots were the metal and ivory "meet" that can cause some "discomfort" when shooting,and even possible breaking under recoil if there are stress points.
To remove one piece grips for a SAA you must remove the grip backstrap. The grips are actually two pieces glued to a spacer bar which is fitted up against and held in place by the backstrap. Kinda hard to describe but if you're looking at a SAA with the grip panels removed you'd get the idea.