There's feel vs. real though. Striving to produce a Serio type move requires a good pivot relaxed arms and hands, all beneficial. I know when I try it and feel like I did it well, my ball striking is much better - more solid, higher and longer.
I can do it easy with any practice swing.....at this point I don't know that I can (have Sergio angle and trigger delay) when actually hitting a ball and having to control the clubface.....