I have also been curious to learn more about ANS, boomboom. As to whether or not your penis really needs complete rest to grow, nobody really knows. Resting to grow may be true for bodybuilding, but that may very well be different when it comes to PE. With that said, I am not advocating ANS as there are obviously serious risks.
Here are some other things to consider:
I believe it was Big Girtha that introduced Bed Fowfers as a way to get a little PE (mostly preventing turtling) in while catching some ZZZZs.
I have also read about members using traction wraps as ANS. I have no proof, but I would imagine a traction wrap, that is not too tight mind you, would be less dangerous than other forms of ANS mentioned here. I have heard of guys using everything from ACE bandages to Saran Wrap.