The thing with mixed breeds is that you never know what the product will look like. I've seen yorkie poos that look totally different from one another. I suppose temperaments can vary as well.
Max has the poodle coat with some yorkie coloring. He's a charcoal color with beige legs and chest. You can see his pictures on my profile. Max has the stubbornness of a yorkie and the smarts of the poodle. Not saying yorkies aren't smart but poodles tend to pick up things very quickly.