I found already a topic which is indirectly touching the subject, but just wanted to rise the flag to developers and users: Mechwarrior Online is the only game I was able to find so far, which is ignoring keystroke assignments for additional mouse buttons in Logitech SetPoint.
You see, mouse from Logitech MX5500 revolution set has at least 8 additional "buttons" which are very convenient to use in "non-trivial" games

And that's sad.
Edited by someth1ng, 04 December 2012 - 06:21 PM.