Yes, and no. Caveat - on the second one, you can select all the nodes (right click) and apply them to all the material zones in an object (right click). However, it is NOT selective -- so with figures such as people and such who have multiple maps, it will mess all sorts of things up

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)