I've been using the metal 8x10 for close to a year now and love it. You have to realize that no camera will do everything perfectly, as each design makes some trade offs and the Canham is no exception.
The Canham folds into a nice, fairly light package and sets up/breaks down quickly. The ground glass uses the same fresnel as his 4x5 and it's a true joy to view the image on the ground glass; once you see it, you'll be hooked.
The only drawback I have found, and it's minor, are the two knobs on the rear that lock the rear standard and move the rear standard. Both of these knobs are in close proximity to each other and are the same size, so it's easy to grab one and think you're on the other, but it's really not a big deal.
If you have any specific questions don't hesitate to ask, but I'll say it now, I'm biased; I love the camera!