The re-positionable doesn't stick all that well since it is designed to be easy to move. I just find that it doesn't attach well enough for me.
Faerie - Thanks for the offer! I actually found the permanent ones last night at my LSS. It turns out that they were just out the last time I looked. Now I just have to figure out what to do with the useless repositionable cartridge I have.
Thanks again for offering to pick some up for me, Faerie! The ladies here are the best!!