Damn, I can't remember the name of the tubes. I keep thinking Sunfire, but the closest thing I can find is Sunlite.
The LBS Mechanic recommended them if weight was not an issue. He said they were tough.

Yeah, I don't recommend using tire levers to get the last part of the bead on, but if you can't, and you watched all the You Tube Vids from some Australian Bloke talking about Faraday Liquid, some guy with Tie Wire that kept spitting on his fingers moistening the inside of the tire, and others making it look simple, and some swearing on here that you don't need tire levers at all for removal, or installation, to divine intervention, and lastly your LBS than WTF!

And like I said, I put a Gatorskin on a Rim a few months ago and it was a breeze. The rim was narrower though. Whatever the rim is on the late 80's aluminum Trek's.

Nothing wrong with attempting to make your bike lighter, but I think for most folks needs it becomes a bit much.