I did not have any luck getting ahold of the Pfanner rep in Canada, tried a few different times. A little lucky timing paid off for me getting a pair of Stretch Air protective pants from overseas.
So far, so good. The fabric is amazingly comfortable, everything seems to be really well thought-out. I'm not sure about the gaiters yet, I think maybe a zip-in system would work so you could take them out in summer.
During the first week that I wore them, we worked through a drenching rainstorm. I stayed pretty much dry and comfy as could be. Once the pant legs wet-out they dryed very quickly.
It still feels like I'm wearing chainsaw pants in the hot weather though.
The jury is still out on the price, so far they are worth it.