I have used one before. Obviously they dont work on beli's or torps. If your smoking a strong blend, you can get a bit more build up of tar than a straight cut.
NOT TRUE , I use a v cut on all my torps, I just stick it in as far as it will go & pull the handle ( I have a table mounted V Cutter, it is about 8x10x12 clear lexan with brass gears & stainess blade , looks just great, I also have a pocket V Cutter, it opens up a torp just fine , I use it all the time on my short storys & monte #2's
Enjoy, Vince