For Touch, it's one of probably the best rubberband trick one can have. There are no gimmicks involved, and I don't believe there is a set up... not a before hand setup anyway. Also, when I have tried to perform this trick, sometimes it does not work and other times it does.
As for Fourfit, it's almost impromptu except for a small gimmick that you have to create. True it only about a minute to make, but to perfect it, it will take longer. As for the trick itself, it's very amazing to the spectator, BUT NOTE THIS, the trick is VERY angle sensitive, and Reuben does mention this on the DVD as well. You can really only perform this at eye level, and the angle has to be just right in order for the restoration not to be seen. The only really angle sensitive restoration is when you restore the first two pieces. If you can get the first one down, the rest will be very easy.
As for that, you guys can still go on with your business deal, I thought I just needed to chime in