Great thread, and I wish I had something funny to offer.

As it is, I just have a review:

I have been thoroughly impressed with my Simms Slick jacket. Pricey, but it has performed flawlessly. To answer the initial question of the thread, the back is cut low and it does keep me warmer. In addition, the internal cuffs do a fantastic job of keeping the water from running down your arms while holding your rod up. And for its namesake, all of the hidden zippers don't catch/foul anything (this is more applicable to fly casters, but is still very nice for all fishermen).

Hands down best coat I have ever seen, and I did quite a bit of research prior to buying it.