@David> WM didn't have an XL for me to weigh, but I'd estimate the weight for that size to be in the 11 ounce range.
@Mark> Yah, The new Vapor-Rise Lite would be near-perfect with a hood... I haven't used an original VR smock for several years, so sorry, but memory fades and I can't really compare the arm designs. The VRL arms were quite long with thumb loops, though. :)
WM uses a 20d microfiber for the Flash Jacket. I didn't see any down poking through the sample, but it is a pretty light (though very nice) shell.
@Tom> I did meet with Patagonia. They didn't convey any new information on their Wool 1 line. Try a forum search, IIRC somebody is discussing it here on BPL.