Low profile, high quality
Overall Stohlquist has made a good product. Extremely low profile means this jacket will not inhibit your range of motion, great for paddlers and especially kayakers. You get a decent amount of float considering the minimal cut, and I had no problems with the jacket riding up. I am about 6' and 175 lbs and the Large was perfect. With this particular model I'd say it's safe to err up a bit on sizing and cinch down rather than get something too small and constricting.
My only real complaint with the jacket is that the pocket doesn't hold much. I wanted to carry my camera and a relatively small knife and had to cram them in there.
Ultimately a high-value product; a good jacket at a great price.