This will be a Blender only effort. I should mention upfront that the original concept is by Tom McDowell from Orbis Pictus and used with permission. In particular this sketch of a butcher spoke out to me.
Usually I don't do softbody sculpting, but i'm warming to it as it allows one to quickly knock out a design. Also I realized that the sculpting tools are really quite decent in blender 2.5x. The sculpts by http://thisroomthatikeep.blogspot.com/ and his playlist are a big inspiration.
so i'm starting out with a polymodel of apx 2.1k vertices, and this is with 2 level multires :
At this point i'm not clear how to proceed, sculpt as much as possible? how to do the clothes..