Hey Keyplayer,

Welcome back!
You have quite an idea here!

While I am not Trans*, I am very much a Trans* advocate.
I have known many people while they were transitioning. Some have gone stealth, some have not.

Back to your ideas.
Yes, some MtFs have issues with finding undergarmets that fit.

The FtM's I have known have rather easily found male undergarments, under which they wear a belt and a prosthetic. A couple of manufacturers offer men's style briefs with pockets which hold the prosthetic. That said, I fully believe the Trans* community is growing and the demand for new ideas/options and for more undergarments increases every year.

I wish you luck with your ideas/projects!


WC