^Keens do tend to fit wide, but I think the Marshall WPs I have are less so than some of the other "hikier" shoes.
About 6 months in, my right one (pivot) has enough wear in the sole that there's a hole that water comes through if the grass is wet enough...which sort of defeats the purpos of WP.
The Marshall is less durable than the other Keens that are less "sneaker" like, but not horrible. I'm probably not going to get them again, though. They're more comfortable off the shelf than the more straight up hikers, but they once those hiker styles break in, they're better IMO.
I thought the insole the Marshalls came with were crap, honestly. Even with some other insoles, they don't support much, and my feet will hurt after a 3 round day. I do like the fit of Keens generally, I've got kind of wide feet, but I'll probably go with something like the Koven next go around for durability and long term comfort.