Well, I bought it.
This jacket makes me want to ride really...really fast! The sizing is great, and the leather isn't too stiff (for being brand new). My last jacket was (and still is) a FirstGear Kilimanjaro. It's also a great piece of gear, which is why I'm going to hang on to it. The biggest difference is the lack of fabric flappiness in the Alpinestars. I really feel like I'm slipping through the air.
I got it pricematched at metricbikes.com for $265 (free shipping), which I think is a steal!