Does anyone use Platypus water bottles?

AnaNotBanana

I just saw these water bottles the last time that I was at REI. It's basically a soft plastic bottle (similar to the bladders from Camelbak backpacks) that you can roll up and store when it's empty.

http://cascadedesigns.com/platypus/water-bottles/softbottle/product

Does anyone use this type of water bottle? What are your thoughts on it? I was looking at getting a different kind of water bottle to take with me on my snowshoe hikes. Most of the water bottles that I own are stainless steel and it gets a bit uncomfortable grabbing a cold metal bottle in the snow and cold. If anyone uses them, let me know what you think.