Works great!
I have had chronically bad posture for many years, primarily slumping shoulders, versus slouching my upper body. I have found a position on my shoulder to place the Upright Go so it will buzz when my shoulders curl forward, even if I am sitting upright.
The traditional placement on the back between shoulder blades will not provide this effect for me because I slump my shoulders while sitting upright. Even when not wearing it I am always very aware of posture now and find myself frequently self-correcting. It has been very useful for me.