Do you know about the URNUs? (Uni RN Unit).
In case you haven't:- It's the closest you'll come to a Navy UAS equiv. Unfortunately the only flying they get done is on special one offs, or on a couple of competitive summer camp slots (where an URNU member or two will be selected to swap places with a UAS member for a few weeks a year). Unfortunate that is, if you are looking to fly. If not, I hear the URNUs have just as much fun and opportunities as any UAS, if not more!
That said, I would be interested to hear answers to your question, being an ex UAS flyer who's going to the AIB soonish.
A