I am a ES / NQ trader, and recently gave ym a try.
Tested it with 5 daily round-trips, and noticed that it's a great thin scalping instrument. Getting 5 - 6 pts wasn't a hard thing when you trade it as a lagger from the ES. If you keep stops relatively tight enough, the winning ratio can be quite high. (I had a 6:1, with a stop/target at 5 pts)
If you are an experienced e-mini trader, you should be fine. Try scalping it to start. You will LOVE the fast fills.