Whilst these picks don't make you instantly play like John Petrucci, we all know, that the simple joy derived from using the gear of our idols, can push us to spend more time with our instrument. And the math here is simple: more time plying = more practice; more practice = a bit closer to John's level.
As a bonus: if you spend most of you days practicing, you'll have no time to shave - bang! - instant Petrucci beard!
To sum up: excellent pics - great grip, good durability!