@rabble - do you share the whole .ssb folder across those devices via some sort of network sync to avoid forking your feed? Or are you just very brave? :P
@LiberyBeta - there's a feature being worked on that will allow you to share the same identity between different devices called 'sameAs' (if you want to search it at the top right). You'll still have a different key on each device but clients will treat them as the same person.