Nice review Wingman. My sister just picked up a similar pack for hiking the PCT and swears by it. It's amazing how light and functional those packs are.
I like external frames. I'm hoping for more choices soon.
@asabat, did you see New Knees? He was carrying a Luxurylite. Also, when Evan, Karen and I reached Lake Morena there was a southbound hiker carrying an external frame. You're right though, that's not many at all.