Just got these yesterday and have barely worn them.
But, here are my initial opinions:

1) Love the super soft internal lining.  Wore them without socks to take the garbage out this morning and they are really comfy.
2) Definitely couldn't walk a long distance in them because they're just slightly roomy and, though there is some arch support, it's minimal (which I expected, so I'm not disappointed)
3) They have a wide top opening so it's easy to slide feet in and out
4) These are going to be great for adventures in the PNW-region since it rains all the time here (but will choose my hiking boots over these for any major walking)

I definitely like these boots for the quick slip-on, plus, they fit under jeans nicely (I really didn't want tall rain boots because they have to go over pants frequently).

Also, I am usually a 7.5 and got a size 39 (instead of 38) because of the reviews I read.  I'm glad I did -- my feet go comfortably to near the end of the boots.