First, I don't dive the Kodiak, my wife does. She bought it last month from Scuba.com and we dove it in Catalina, CA in 60-64 deg. F water.
Now the fun stuff. . .
This suit is a BEAST! I swear it can stand-up by itself it's so thick. I didn't even know they made wetsuits that thick and I've been using wetsuits for 30 years. Getting into it can be a challenge. We provided comedy to the crew of the King Neptune that I doubt they'll soon forget. If you get one, consider a skin suit to go with it to make life easier.
Pro's-
Warmth- My wife has about standard tolerance and she was warm, bordering on hot, even after the 3rd dive.
Construction- This thing is well put together using quality materials. Including shoulder pads to protect against BC shoulder rub.
No advanced training needed- It's a wetsuit, put it on.
Semi-dry- She actually got out of it pretty dry. Even after a 70 minute dive.
Con's-
Bulky- Like I said. . . Beast! It was a little difficult for my wife to move around. Not bad, but something to keep in mind. If you've ever seen the movie "Christmas Story," think about the little kid bundled-up in his red snow outfit and you get the picture. And packing it is not fun.
Buoyancy- This thing is harder to sink than an old Boston Whaler. Either bring a lot of weight, or if you're diving off of a bigger boat just ask to borrow the anchor.
Semi-dry- Unless there's just no way to avoid it, don't even consider peeing in it. That's just gross!
Drying time- This thing takes forever to air dry.
All in all she loves it. She made no mention of the neck. But she's not around at the moment, I'll ask her when she gets back. The zipper doesn't seem like it'll be a problem (famous last words) as long as it's waxed from time-to-time. She doesn't want to dive dry and this is a good option if that's the case. Pinnacle did a great job.