I had been practicing the sd for a few months now, and I keep getting less motivated every day. Is there any thing that you can do with a sd that you can not do with a bd? From what I know, it is either keeping the top card in a game with a punched deck or an out for a psychological stop force. Obviously its main use in my opinion is showing off the skill by doing it face up. Since it riskier and harder than a BD, Is there any reason for me to try perfecting the move?