DebW - those Agate T's are mighty nice. I have a pale purple-y one. The Qu-T doesn't have piping, that might work better under pack straps. The fabric also seems to be a bit heavier.

Here's the link to DivingBiker's Smartwool 3/4 length sleeves.
http://forums.teamestrogen.com/showt...d=1#post148412

I just got mine, same color, in size L. I like it quite a bit. The fabric is pretty light, on a par with Ibex's Qu-T but not as light as the Agate T. Certainly not as heavy as Ibex's Norge/Norse crew! The 3/4 length sleeves are kinda cute. The orange part sticking out has a slit all the way to the gray (sort of a floppy French cuff) The torso is nice and long for me, plenty to tuck in but it still looks ok out. In person the orange is a pretty happy deep peachy color. Not garish. I'm a red-head and I can get away with this orange.