they are great together and compliment each other well. ive tried this combo several times and usually works out good. I did have one instance with a 14 inch CK and a 12" silver, that ended in ugliness...but it was an isolated incident.
They work well with eath other. I have an Aro and CK. They get in little scuffles with each other now and then, but I think the Aro wants to pick a fight sometimes.