1. Perhaps, but I wouldn't be replying with "1337 5kr!p7 v1337 (c) Skip" or anything. See below.
2. It depends how it is used - In light of revamped efforts to exploit mirc (hardly call it exploiting really, just being a royal pain in the a..) a good use of a version changer would be to either suppress your mirc version or mislead attackers into thinking your running a certain mirc version (to catch/deter mass attacks or make you less of an appealling target).
I wouldn't use it to pretend I don't run mIRC, advertise my script or blind others with my drug induced choice of colours - thats just preference. I don't see how it takes anything away from Khaled and his hard work -- It's his hard work that allows us to do stuff like this in the first place. If I ignored all ctcps, including versions (which I do), would I still be doing something wrong towards Khaled?
Just my 2 cents anyhow...
