Wanted to add my experience for posterity...
Just picked up the 11.6" MBA on Sunday.
Background:
I generally follow apple stuff since I am a recovered shunned user of apple since the late 80's who took a break right about when they blew up in the early 2000's(having owned apples through the 80s and 90s, IIc, IIgs, mac classic, LC, Performa 400, Performa 6400, etc...). All I ever saw or heard from people for 2 decades was "Apple is dead" or just general laughs when I mentioned apple...... So I succumbed and took a break till the iphone came out.
NOW:
after about a 7 year "rehab" from the addiction.... I've had 3 models of iphone, MBP13, MBP17, iPad, and now the MBA 11.6 which I am typing on now (all of which I still own and use each and every one of).
The MBA:
it's 11.6" 64 gig base model with 2gb RAM. Basically I have the power to make up for any shortcomings at home (17" MBP for music recording/video/photo editing/etc... and core i7 930 Winblows workstation for heavy duty boring stuff as well as driving the HTPC section of my 94" 1080p projection screen).... Anyway, back to the mac... This 11.6 MBA is great. I can carry it right along side the iPad and it still is less space and weight than my dedicated (read: forced upon me) work computer which is a thinkpad 15". When I travel, I need to carry the thinkpad no matter what, so it'll be nice to have this 11.6 along with it rather than stacking it with the 17" MBP which is heavy as heck in comparison.
Usage of the 11.6:
Being that I own lots of computers of varying power and use all of them, this 11.6 still serves a great purpose. First of all... Yes, the iPad does about 60% of what this does and it does it well, and I still don't mind keeping the iPad as during a car trip, it's incredible for it's constant access to the internet while moving. But beyond the idea of continuous internet, the MBA makes its presence known around town mainly in the fact I can carry it carry easily side by side with the ipad and have 2 worlds open to me. One with the ipad which is ultimate connectivity and convenience while the other with the MBA being huge power for such a light and tiny space. Screen is great (being used to 1920x1200 or more for just about everything it's hard to say that but for the size vs. pixel density it's great)... Now, where do I use the 11.6 MBA? Well, currently I'm at a bar (Charlotte Flying Saucer if you must know), but I'm not one to really tout that I'm out in public using an upber device and attract attention. but I will say this is the perfect bar/coffee house/airport notebook to lug around. Outside of that, I think it's a great secondary/coffee table laptop to have around when you're watching TV or movies on a couch and want just a hair more "computerness" than the iPad.
Final result:
Yet again I'm amazed by what Apple has done and being a reborn Apple fan I can say they did a great job. Whatever strange and almost meaningless shortcomings you can come up with (no backlit keyboard, limited RAM, Limited SSD space), this is still a marvel of technology. To me I think someone will come up with limitations on just about anything since there's no seeming definition of "perfect" but I will say this is a darn good advance towards my own happiness with a product.