RAB eVent Products-How tough is it??

[Orangethunder]

I'm considering picking up a set of RAB Alpine gear, jacket and pants. They use the eVent fabric which I know gets a bit of discussion on here. What I'm wondering is how does it perform as far as durability? The breathability seems to be quite good but I've heard stories of it not holding up well in brushy situations. While I will be using this gear mainly for alpine sheep hunting, we all know you have to bush whack to get there most of the time.

Thanks