if your technique is sound and it looks flawless it blows people away. I've been doing the muscle pass for about 5 year's now. I can pass a silver dollar roughly 1 1/2 feet. A lighter chinese coin or poker chip i can do almost 3. When the hands look motionless it truly blows people away. i use it a lot in my coin on shoulder routine as a misdirect for the second coin load. Additionally as a covert maneuver, being able to do it well enable you to do a lot of great coin work. Shoot Ogawa has some great material utilizing the move. Its also a lot like flourishing, i will sit there and just do the muscle pass and some coin rolls to draw attention, then when someone notices i will go into a coin routine.