I purchased the foil quill from HSN and got to play with it. I thought I would share my preliminary results in case anyone else is interested. I have a Scan N Cut and tried to use it with a stamped image, this one (SimonSaysStamp Beautiful Bouquet):
I had a lot of trouble converting the image into the necessary file format for the Scan N Cut (this is the Scan N Cut's software issue, not the quill's). Long-story-short, I managed to eventually get it converted but it wasn't perfect.
I went ahead anyway just to test the quill to make sure it worked and foiled the image; this was the result (please remember, this is a not-perfect converted image, any imperfections are from the software, not the quill):
Of course, the shine didn't photograph well but I think you can see, it worked really well.
You definitely have to make sure the foil is taped down and as taunt as possible with washi tape. I just did a piece on all 4 sides like they demo'd and instructed in the enclosed booklet but the tip pulled the foil up in the corner and bunched it up under itself. Once I put more tape around, all went fine. This image is about 4x7 and took almost 13 minutes, YMMV on a different machine. Not sure I would use this image on a couple hundred wedding invitations with that amount of time needed, LOL. I used the medium tip but I think I should've used the small.
I plan on taking the piece of foil that has this image etched out of it and using it with the GoPress to not waste the foil.