I've used one for about 5 years.
Materials/finish: Top notch, Snugpak make good bags.
Weight: Too heavy/bulky for backpacking but for standard UK style bimbles into woods or car camping it's fine.
Design: The asym-tieouts for use with HH are a nice touch, the method they chose to deal with the ends is less than perfect. It does the job once you have it dialed in.
I've used it pretty much exclusively with a Nomad Land Hammock, which along with the DD was one of the main hammocks used in the UK by bushcraft types. It's basically a large parachute material hammock available under several names that comes with metal s hooks and a built in bag, you know the type...
I've had plenty of warm nights in it, never used it below say 4-5 deg C
If I was US based I'd put the money that would go on shipping this UQ from the UK and potential customs charge towards one from a US company, but it made more sense for me to buy this than import something myself.