There is absolutely no problem attaching male parts intended for M4 to Dusk. As far as I can see, ALL of them fit him... Load... conform... (if you're close up, z-tran 0.017 and y-tran -0.017) ... you're done. And there's more than enough textures out there for M4 characters that work just fine. <But I didn't tell you this, because that would mean that someone designed him this way on purpose!> ROFL.

It was a smart move.