Be scared
I had a Motion Pro twist on my 700xx. The scarry part is if you lose your balance backwards and reach to grab up you will peg the throttle and be out of control at high speed. Not like a 2 wheeler and you just slide off the back. The rear fenders will hold you on. I know, I have a new rod from my knee to ankle. I broke my tibula and fibula. I almost lost my leg so be a little cautious. I have went back to the thumb throttle. A year later and only comfortable walking and riding.