Ok, there are misconceptions about penis "enlargement".
Yes, you will gain, and therefore have a bigger penis. What PE actually does is not "grow" your penis, but rather a deformation process. Ligaments are stretched, colligen foration occurs, and the "inner penis" is pulled out.
Many gainers end up with "creep" and "turkey neck", due to this. Creep is where your fat pad skin becomes the skin for the inner penis that is stretched out. Turkey neck is sort of the same thing, but from the underside. You get a sort of scrotal webbing.
There are ways to avoid turkey neck. When stretching, you will need to use two hands. One at the base, and the other pulling at the top.
Naysayers will always argue whether PE is acheivable. It really is, very much so. It just isn't "grown", but merely a deformation of the penile tissues and ligaments.