Red he's asked that same question in two-three diffent threads. He just wants an answer.
If I were uncircumsize I wouldn't think you would have to pull back the foreskin for the AE or any other [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]traction[/words] device to work properly. In fact I would say that it's similar to a bib in that respect since you actually stretch the skin and the penis at the same time, you wouldn't want to lose coverage since you're in tact so I would imagine it being safe and possibly the best way to wear an [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]extender[/words].
Now, back to the thread at hand. I like red's idea, but I know that the AE and the head adaptation for other models is easier to just order in stead of fooling around with the BIB and the [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]extender[/words]. Just makes more sense to buy it then to make your own, that is if you can.