I was so curious about this that I finally decided to TOFTT and purchase. I was worried about sizing because like "K" says, I couldn't find one anywhere.
Well it showed up at 6:00 pm before I had to take a 5.5 hour ride into mixed weather. I had very little time to spend getting familiar with it. Basically just threw it on and hit the road. Short summary: I LOVE IT!.
Plenty comfortable right out of the box, very secure feeling, enough vents to handle a period of 99 degree heat (as always, just keep moving), and kept me dry through an hour and a half of mixed rain and traffic spray on both surface streets and freeway.
I discovered a vent the hard way when my right forearm started feeling wet, but it really wasn't. The waterproof membrane is inside the vent, so it got wet on the outside and was just sticking to my arm.
Still dialing in the fit, and entry / exit procedure, and the knee pads may have to be replaced. They're rigid, and feel like they're mounted a little low. They climb into position over my knee cap, and hike the legs up a little on the way.
They've already evolved this product, so you can get this one on closeout specials if you look around. I paid $413 plus fees for mine, and plan on using it for a long time.
Hope this helps.