There's a lot of propaganda in the media about how walkers can be dangerous and dirty. But they are the most gentle friends in the world. I once saw a coil leg model carefully stepping over some tree frogs that were crossing the road. Just because they're big and bulky doesn't mean they'll hurt you.
John McInnis is a conceptual designer for feature films and videogames. You can see more of his fantastic work on his website.
(Spotted on the always-amazing Nuthin But Mech)