Occasionally. Internal usually using an Aneros. Love fucking missionary with my Progasm inserted. Feels like you are being fucked from behind and it moves and rocks with your thrust.
I have experienced two vry different type of P orgasm, three really. One is internal and unlimited. One is a stanch erection and blasting ejaculation. And the last is flaccid and more of a hot overflow of prostate fluid. All are extremely powerful and satisfying.