Cleaning the pro back is a "dream".
On AA or IR filter, you can use the same method, however they are very fragile and I have applied too much pressure once and broke an IR filter.
I guess the line between never having damaged an IR filter to breaking it is probably just one of experience and I'll only find out if I do it. (I'm glad I secured a spare a while back just in case)
Just how hard do you folks push on the glass? I treat it as delicate glass but not excessively so. I don't really ever apply any significant pressure at all and rely on the fluid and swab to loosen any stubborn crud. Otherwise I just use the large visible dust brushes for general maintenance.
You are correct about the back cleaning being a dream compared to the act of plunging a brush into the black hole of a DSLR ...