I have the GO! and I don't think it is useful for cutting little scraps., myself.
I cut up larger scraps for a tumbler quilt and that was great, but for cutting small bits into 2 1/2 inch squares, I think it would be easier to do by hand.
Since using it for the Tumbler I haven't really found much use for it and have decided to sell it as I find it easier to just rotary cut things. A lot of people really like them, though.
Watson