For me it really depends if it fits in the fluff and culture of the faction represented. In a place like bakunin were people run around with body-modifications like elf-ears and tails? Sure go for it. All the boobplate they want. In a proper military outfit like Invincible Army? Hell nah. That's also why i think the cheerkillers don't fit tunguska at all (or the puppetica remotes). Tunguska was always the "serious side of nomads" for me. But that might just be my personal misconception because i don't own a single RPG book were all the fluff seems to be hidden.