Here are some right things to point out:
1. I started integrating Ken's icons in my local AROS sources only, and after some initial problems I succeeded in compiling everything fine. Ken's icons work, at least.
2. I am personally doing this task for VmwAROS only, since changing the default AROS theme is not something I have the rights to do. Expect to find them in VmwAROS, someday.
3. As far as I know, AROS nightlies aren't going to use Ken's Icons, at least not until they will be released with a proper licencing model which would allow AROS to use them without any possible legal issue. And, obviously, most AROS developers should agree with this change.