I've seen the Declevis recently at an lfs. It's really not as pretty as the internet and books make it out to be. Seeing as how the Tinker's is a darker version of it, I would assume it's also pretty ugly. They really aren't reef safe in any case. I'm sure he'll pick at your coral. I have a Pyramid Butterfly in my reef. It's very reef safe, pretty, and not rare but definately uncommon. Maybe you should look into that.
Just reading in my Angelfishes and Butterflyfishes book by Scott W. Michael, he says that the Tinker's Butterfly will eat tubeworms and may nip at soft coral polyps and will 100% pick at gorgonians. It is rare for it to pick at hard coral but if it does, it is more likely to go after lps coral than sps. He goes on to say that it should be housed in a dimly lit aquarium though so seeing as how you've got a beautiful reef, I'm not so sure how well it will take the light or the coral. He might not show himself as much as you would like in a reef with bright lights.