The first day I used this, I thought is was a great addition to my set up.
I found later it was difficult to stop in time in manual mode. It made me think about whether I could rely on it at gigs.
To solve this you can use the auto mode which gives good stops.
Also the 1/2 setting does take time to register and settle in.
You have to be precise so get nice and comfortable,with position and foot-ware and really get in to the beat!
After a weeks use, I am getting the hang of the quirks, it is growing on me more and more.
I would highly recommend this product, but make sure you allow a settling in period before you decide if it's for you.