The UPS guy just dropped my jacket off. So I will do a quick initial review.

First Impressions:
I ordered the Black version. I was worried of the bright blue of the zipper in the pictures on backcountry.com, but in person I actually like it. It looks good. Backcountry.com lists the weight as 14.0 oz I weighed it in at 13.88oz. The material for being thin and lightweight has a robust and sturdy feel to it. The material is not too smooth or slippery, it has a rougher feel to it. Seems well constructed and none of the material or zippers seem flimsy or cheap.

Several reviewers and commenters on different sites have complained about the lack of pit zips. I just want to say that this jacket DOES have pit zips. While they are not full length they are ample size for doing their purpose. I didn't measure the exact length of them but they are about 6 inches long or so.

Fit:
I ordered an XL. I am 5'10, and 220lbs with fairly broad shoulders. This jacket has a more athetic cut. So it felt a little tight to me while I was putting it on, but once on I must say that I think it fits remarkably well. So if you have broad shoulders like me this jacket still fits well and provides ample range of motion. I like the extra fabric built into the arms, the jacket doesnt ride and raise up/shift position when moving your arms around. The jacket has a pretty decent length to it, it comes to just below the pocket openings on my jeans. The hood fits snugly on the sides but has ample room for a helmet. The hood is also able to be cinched down tight with two shockcord pulls. The wrists have a velcro tab to adjust the opening.

Performance:
So I have worn the jacket for about two hours so far. Its about 70-75 here today with a mild breeze. Walking around my house for about 30 minutes feeling out the jacket I was very comfy and didn't seem warm. If you move with any force or turn quickly you can actually feel a little air come through the material. I went for about a mile walk in my neighborhood and remained comfortable the entire time, I ran back the last half mile or so and started to work up a light sweat. I could feel the jacket breathing, and when running or when a strong breeze came by you could feel a little airflow come through the fabric, Not much but just enough to be noticeable. When I got back home I did some jumping jacks etc for a few minutes to warm up and start sweating a little. I can say without a doubt this jacket breaths pretty good from first impressions. I hope to get out for a dayhike thursday or friday to give it some more tests. Supposed to have rain sat and sunday also, so testing will be on going.

I stood in the shower for about 10 minutes, and the fabric did not wet out in any spots, and the dwr performed well with water beading and rolling off. I allowed the water to hit on all the zippers for a minute or so. Chest pocket zipper and main zipper have a good seal. Holding my arms up and leting the water hit the pit zips there is very minor leakage where the two zippers on the pitzip meet. So unless you walk around in rain storms with your hands over your head for minutes at a time i don't really think this is an issue.

Will post some updates after a few hikes. But initial impressions are I like the Stoic Vaprshell.