Jessewrote a review of Patagonia Houdini Full-Zip Jacket - Men's on March 20, 2013
Familiarity: I've used it several times
I love this thing, tiny, light, hood cinch works well, zipper works well, good fit. This over a base layer and R1 is perfect for a cool day of XC skiing or other heavier activity. Slightly water resistant. Great for cutting the wind at the top of a cliff.
Downfall: The stuff pocket is too small. I sewed extra material onto the pocket to make it so I can stuff it more easily. Without the modification, it took a good minute to cram it in tight enough to zip closed. With a crude, hand-sewn mod and added zipper pull, it is way easier and quicker to pack away and start up the next pitch.