I'll echo your (and Kenny's) reasons for selecting a camp shoe.  While the model I use is not Keen, it seems to be a collaborative effort between Keen and Simms ... and it bears a Simms brand name --   (You need to Login or Register.  [Since I've had mine for a couple of seasons now, I'm not sure if they are still available.]  I'm also very fond of my Simms fleece fingerless gloves for cool weather use (paddling and fishing).

Also, like Kenny, I'm now using an OTB boot (but mine is the Ohdin model--a high-top version of the Abyss).  Of course, if the weather is likely to be cold, I still have Chotas (Nunavut II-neoprene and fleece lined knee-highs) for that.

dd