sssdIt is a real pain to remove the coating properly from the keycaps, without damaging anything around it. Seriously, Tai-Hao should stop with the coating. They make great products, but the coating is ruining it. The coating is just plain annoying/sticky/gross, etc. Instead of resisting dust/grime/bacteria, it attracts them.
EDIT: Reposting a guide from Reddit for the people who are interested: https://www.reddit.com/r/MechanicalKeyboards/comments/3ik3jz/guide_how_to_remove_taihaos_nano_antibiosis.
But seriously, if you are planning on buying these and removing the coating; Reconsider. Might not be worth your time. Ton of other people here will agree with me. These might be worth it though, considering these are PBT, and not ABS.
YamazakiI agree they should definitely stop using the coating to begin with, but I didn't find it difficult to remove the coating without damaging anything - just time consuming! I would much prefer to not have to deal with it, though, and it's certainly a reason not to grab this specific set.
sssdYou should check out the gallery posted in the reddit thread I linked to in my previous comment (http://imgur.com/a/FodAg).
I'm suprised to hear that you got the coating off without any difficulty though.