Since I am way too cheap to buy a beer by the bottle at my local watering hole, I have no personal experience with these.
The new aluminum bottles However, my fellow drunk bastard that sits next to me is a quality over quantity kind of guy, so he pays an extra .50 a beer to suck these down rather than a glass bottled beer. I have read expert testimony that they do not keep a beer colder (college website :thumbleft: ) -- He SWEARS they do. I do know that the aluminum is much thicker. I was heftin' a couple of the empties.
I don't know if I would want those over a bottled beer, but I'm pretty darn sure I would over an "old fashioned" can.
I also heard they are so much more popular than anticipated that even AB cannot keep up with demand. My bet is that these are going to be much more common than they are presently...sooner than you might think.
Seemed like a good spot to put this post.