For the next trick, boosted Luka's colors and tried exchanging hairs with the appropriate recolors. Worked like a charm, as long as both chars have long hair... Until I poked the model to exchange the hair bangs, the rig got tired of my bs and died.

Managed to fuse "Interviewer"(ML) with "My dear bunny"(HM) to form a "Channel's Hoodie" knock-off, and the "Honey Whip" port for Luka is now working... Somehow. It's adjusted to match Luka's chest size and thus a lot more modified than the hair that crashed before was