RE: 20mg of epi or 10-20mg of SD for strength?
Yes, I'm currently cutting now with it. Fantastic for cutting in my opinion.
A problem I had with SD when cutting was going hypo due to lack of carbs. The lethargy can hit you quite badly, making long bouts of cardio impossible. The shin pumps it can cause only adds to the problems. I tried cutting with it (and Epistane) last year but I ended up just bulking on it instead. SD is fantastic in my opinion, I absolutely love it, but its carb hungry nature needs to be taken into account.