In addition to the helpful link provided by thudsun1965, I'll add my two bits.
I am on Eligard (similar to Lupron in that it suppresses the production of testosterone). It has similar side effects. I have experienced hot flashes, nocturia, and shrinkage of my male parts.
You mention the Posey Cuff - I believe you mean the Pacey Cuff. I have tried using one before being on Eligard. It didn't work for me but maybe I didn't adjust it correctly, who knows.
As I recall the Cuff is available in three sizes (S,M,L). The size is determined by your penis circumference and length - go to their website for more info. So there may be a size that is applicable for your situation. I have the Medium size and the width of the Cuff is about 1 3/8ths inches - I believe the clamp types take up less real estate i.e. they are narrower - my Wiesner Clamp is about 1/2 the width as the Cuff.
Hope this helps.