First off, I love the Reality Twister, and not just because I'm writing a booklet with Paul Harris of new effects using the lens.
But there's one point Tim made that I think could be clarified a little.
At the beginning of the trick you do not want to hand the pen out and ask the spectator to examine it. What you do is give them the pen and have them use it. This is a better way to establish the pen's normalness anyway (don't run if you're not being chased).
Other than that I have to say that although I don't like to oversell anything I'm working on, this booklet will have some really incredible stuff in it. The Reality Twister has extremely wide applications which, when you add in an additional magic principle (like a gaff or duplicate object or sleight of hand, etc.) can produce sensationally visual effects.