I'd say to have it Plek'd only in a shop where the knowledge base is deep enough in the staff to know when you really need it. There's lots of good guitar techs here in BNA who can do a whole lotta first-rate fret work for way less than $200+. Plek is an amazing tool, but like most modern tools, it, too, won't work correctly with a 'loose nut behind the wheel'.
Otherwise, you could wind up like Danno. Reminds me of the garage where you took the car for a four-wheel alignment, and while it's up on the lift they run into the waiting room and tell you you need a new muffler, the ball joints are shot, you know the drill.
If they're jumpy about working on an Alembic, KEEP WALKING, you just found out all you need to know. I'll have to try that, I'll call Mica! on them before I go, though !
J o e y