Well I bought one of these chairs last week, and had a chance to use it today. I like the adjustablility of it. It seems a little bit more adjustable than my old one was. I only wish that the head rest moved vertically independantly of the chest piece if needed.
I agree, the client seems to be resting on their knees rather than the seat, but I wonder if changing the angle of the seat might make a difference. I have a lot of playing to do with this yet.
All my clients seem to be very happy with it so far. I had a generic chair from Knowr Your Body Best (in toronto Canada) and it worked well. But my clients find the pisces more comfortable than the other one.
Transporting is a bit of an issue, much bulkier than my old one. Doesn't fit in my trunk, I have to put it in my back seat. When I walk, even with the wheels, it hits the back of my legs (small issue, but was annoying), and carrying is quite awkward.
All in all, I was happy to buy it, a little expensive, but I am happy with it. I wouldn't have bought it had necessity/opportunity not come around, but any chance to buy a new toy, I take.
I may have more to say after I use it a few more times.