I admit I like the pairing in this non-sexual, friendly way. I haven't read much fic but the ones I did check out were interesting or funny. But yeah, it's probably CLAMP to blame that I don't see the problem with shipping them or writing them romantically as asexual. But what you're saying, that's the thing! Having them grow some penises just to fuck each other is too human to feel IC to me.

Doesn't irk me as much as bishifying Aziraphale in fanart, but it's sort of close. Then again, I'm too casual in the GO fandom to care too much.

ETA: And now I recall there was another semipopular 'slash' pairing in GO fandom: Famine/Pollution. I'm not sure the horseriders had a real gender, but since War was described as a female I guess that might make them -all but Death, obviously- gendersome.