Chrontius

Pentacle rex?

Yes. Phallo can be done with or without burial. Opting not to bury your t-dick does technically mean you'll have two penises.

I feel the need to point out that this will leave you with anatomy comparable to the "rabbit" vibrator, which is designed to stimulate G-spot and clitoris simultaneously. As an AMAB penis owner, if I could get an auxillary penis built to match this capability, I probably would, even if I'm dating dudes.

Edit: I've also had to come to the defense of, at measurable personal risk, individuals from the furry fandom who self-identify as hermaphrodites. "Your slur is my identity. My identity is not a slur." was the short form of the argument I made on my friends' behalf.

For neutrale individuals, I'd consider something visible like horns, but also giving them functional breasts. They might serve the "gay uncle" role in this society.