Works very well, bought it to be able to practise in a better position and learn to play more relaxed. It's been all I hoped for, it's very stable and you can tilt it any way you want, out, in, up and down. The only improvement I would like to see is on the underside, the side that rests on your leg, on occassion it slips outward so you need to re-position the guitar. But all in all, a really good product.
This is very well made but as a design it is not particularly practical to use. It isn't possible to easily and quickly adjust anything. By the time you have loosened, moved, and retightened things it can be difficult to know if you are more comfortable or not. The leg pad also slips towards the knee as you're playing. Annoying. Look at the De Oro Guitarest instead.