I think, after all the backlash with the early external BBs, Raceface started with the phil grease in all of their external bearings. Like I said, I have tyhe cheap one that comes with the evolve, and it's held up fine, even with wet conditions. I've heard the blangin' gold diabolus cupset is better. A buddy of mine has the evolve set, and he's still on the original BB. It's just starting to feel kinda $h!tty, but it's been well over a year of all-sorts use. He got his money's worth.
Still, my experiences with the cheapish shimano external BBs will probably lead me to get another set of those when this evolve gives up the ghost. Right now I have xtr cups on my kona; when I ordered my lx crankset back when lx first when hollowtech 2, I hadn't realized that the cups came with the cranks, and all they sold thru qbp at the time was XTR cups. Still, got em mad cheap. I worked at a shop, then.
Whatever, i think the bottom line is, I'd avoid the Truvativ external BB cranks for design issues and limited compatability with everyone else's BB. And I tend to love SRAM stuff, in general. I just don't dig those cranks, based on experience