Rob, it is your moderator status that allows you to reply to those threads in the FAQ. Lowly "god members" can only print it, bookmark, forward to a friend, alert a moderator, or delete their own post in a thread once it is in the FAQ section.
As to the original soda blaster, yes, since it is essentially a siphon feed the longer the feed tube the harder it is to lift the material into the air stream, so there must be more material getting blasted out per minute with the shorter tube. I'm also skeptical that it is efficient enough to remove paint, but I am also a big fan of experimentation!
I've seen some BIG soda blasters very efficiently stripping through 20+ layers of autmotive paint down to bare clean metal, but thos blasters had MAJOR league compressors and reservoirs feeding them.
At least being a mad scientist with a soda blaster is more safe than with a traditional sandblaster.