Bukkit

Would it be possible to have a setting in the configurations to choose which slabs the plugin will register as shops in the region?

I often build with slabs for paths/roads, but don't mind using a different type of slab to distinguish between the shop slabs and build slabs. If I could just pick a couple of slab types, then I could build with the others in the regions that are designated for shops, without all the slabs people walk on being shops as well.