Sounds great, I just need to try one of those out now before buying!
Unfortunately I'm going on a tour around Japan in a couple of months time, so I'm keen to buy kit now (which will hopefully suffice for big tour as well)!
Since it's still likely to be very hot and humid, thats why I was interested in how well Synmats would hold out in those climates (instead of the very cold which they're primarily designed for).

Being in the UK I had no idea where Waterton was (nor for that matter how cold 39 F was!), but it still seems freaking cold!