I would NOT recommend their Kydex backplate. Like everyone, I was interested for the weight savings but when I called to order it the sales guy tried to discourage me from buying it. I insisted, and when it arrived it came with a sticker warning me to avoid prolonged sun exposure! What kind of backplate softens or melts in the sun?
If you travel a great deal and like a backplate, you might want to check out Deep Sea Supply. They make a Kydex backplate which weighs about 1 pounds, unstrung. www.deepseasupply.com
I would also say that the product seemed flimsy though probably fine for single tanks. The sales guy specifically recommended against using it with doubles.
Dive Rite used to make a 1 pound ABS plate though they discontinued it. It's easy to find 2 pound aluminum ones. I'm all for saving another pound but using a plastic plate that melts in the sun isn't the way to do it.