Just got this in the mail from Adorama and am in love. Much more versatile than the Nikon 50mm 1.8 with the extra field of view being priceless.
I haven't had more than an hour with it so far but i can see that it will become a primary part of my kit.
I'll try and do some more technical comparison shots if i get time, but so far it's as much as i could imagine from a lens of this type. Great for the crop sensor size.
See very quick sample shots here.