I have not had time to do the full upgrade, and probably will not be able to make a video of the process, but I did slap the magnetic buildtak-or-maybe-not-buildtak plate thing on last night.
No calibration problems at all. No changing anything. Prints just stuck like magic.
I'm not getting rid of my glass, because I still like some things to be smooth and this thing does leave a kind of fine sand texture, but nice for when that does not matter. No glue, no tape, nothing. Small things just pop off. Big flat things just take the plate off and flex it.
Worth the price of admission right there!