It does work. I'm uncut and have a static stretcher - it just takes time and practice to get the wrap right. I can usually go for an hour or so before I have to rewrap.
The secret is to really pull all the skin towards the back of the penis and once you think its all back, pull some more back. Then lay the wrap covering a portion of the head on the shaft, and then lift it slightly while simultaneously pulling more skin back until the area near the glans is really tight. Then wrap a lot tighter than is recommended on the [words=http://www.mattersofsize.com/mosdvd.htm]DVD[/words]. Wrap it around and around making sure you get a good tight wrap. When putting the [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]extender[/words] on, place that two black doohickeys (forgot the name) right behind the glans. Then slowly start upping the tension, let is settle and then up some more. Oh yeah start off making the velcro straps tighter than is recommended as well.
As I said I can usually go about an hour, then rewrap and then go again. I'm sure with more practice I won't have to rewrap as often.
If you'd like to see that it does work, I could take a photos tomorrow and upload them.
Good luck.