--But it's 9pm here, and 96 degrees, so I may think of a summer quilt differently.--
+1. For me a summer quilt is a cotton sheet!
It looks great though! I love the quilt I made, its my favorite piece of gear. I'm sure you'll enjoy using it (and showing it off!). Buttons were a good idea, I used velcro and it sometimes sticks to my socks/bottoms and it can be a pain. Might I suggest adding one at the top to keep it around your shoulders? I did that on mine and it helps it seal around me a lot better and keep out drafts. It won't make any difference on a hammock but on the ground I find it to make a huge difference.