Yes Rod, I've seen that:
http://www.roadsters.com/gibbs/
Excellent article on wheel care.
You're right about garage care but be advised-humidity over 60% and rain/washing will rapidly cloud and then "texture" and dull the surface. Like you I was never a glitzy look guy but used polish more as a preservative.
Funny, in all these years, I never tried this Gibbs treatment...
