From the FAQ Linked:
No. ProcessGuard will prevent Warden from having certain access to programs that it shouldn't, but Warden will still be able to find any in-process modifications, as well as scan the names of running programs and windows.

This goes right along with my research on the subject - Before TBC I was a fairly aggressive botter, I have mentioned here before that I botted a priest from 1-60 and to fully exalted with Alterac Valley, I've pulled more stonescale eels from the ocean than a major fishing barge could... And I did it all without getting nailed.... of course I only did it while I was at the keyboard.

The funny thing there is that my played character has been reported for botting 3 times that I know of, writing UI mods while picking Whipper Roots or in Alterac Valley since you need a raid seems to raise some flags.

The links on warden are appreciated, Everything I saw showed that an active scan of all processes was run when launcher fired off, and other than looking at the process list WoW seems to stay in it's own space. Since Keyclone doesn't MODIFY anything in process, it shouldn't be a problem. Then again, playing WoW on linux shouldn't be a problem either Link.