I got these last year for mucking about in the Portland wet. Easy to get on/off. I was worried being a slip-on that they would slip on my heel when walking, but they don't. In fact these are the most comfortable walking boots I've ever worn and keep my feet dry. It doesnt get very cold here and I havent had any trouble with them being too warm.
http://www.amazon.com/Anchorage-Wate...nchorage+boots
http://www.amazon.com/Anchorage-Wate...nchorage+boots