I tried wearing the PM upside down. I wouldn’t recommend it. The glans felt more numb and it was not very comfortable. The veins to the glans get squeezed that’s why. I know wearing the PM the “right” way squeezes the dorsal nerve but it still is more comfortable to me. The best would be to construct a Bib-like penis attachment as someone recommended in another thread to avoid that either the dorsal nerve or the veins to the glans get squeezed.