good call chester - I have seen them hung vertically as supplemental lighting but with the 'ballast' (I don't know what you call the starter gear on a CFL) at the bottom.

I think it's a bit of envirolite hype regarding temps, although the bulbs do stay MUCH cooler than HPS, the overall heat output is not much lower.

here's an article by ed rosenthal about evirolites, see what he says about heat output.
http://cannabisculture.com/articles/3119.html