I use EXP's on my A200ce (12's) and my new A32ce-12string (10's) and I have never had a problem with the coating disintegrating.
I have liked these strings from the moment I tried them and so I have not compared them with any others recently and I do tend to stick with preferred options. I did try Elixer once, but found them far to "bright".
Even though they are coated, I do wipe my strings after each session/performance and occassionly clean them with "Fast Fret" (am I allowed to mention brands
Yup, EXP's for me every time!