Does it work as good at a BIB ?
I would like to try building one!
I have no experience with a BIB but I’m familiar with it’s design. I’ve tried using elements of the BIB for an AFB hanger but I’ve found the basic AFB to be most effective and comfortable. The quality of an AFB hanger is in the stiffness of the sides and if you get a material rigid enough it will work as good as a BIB if not better.