Detachable Sleeves

Another pattern that I like from Knitty Winter 08 is this sweater with detachable sleeves called Camden. I don't care much about the bobbles, but I think the detachable sleeves is kind of cool. You can remove the sleeves at summer or spring or if you want to wear it with white crisp shirt with long sleeve to get the layered look, or you can attach the sleeves to get the cool look like the picture. What do you think?