I will keep it as far as i know...
But you can never be sure, only problem is... i think i need to sweet talk to my Concierge then, because i got it with store credits after melting a few ships. :(
I don't plan on melting my Reclaimer or any LTI ship but if I know the person and they want to borrow the ship(provided CIG has a mechanic in place for that) then I'll probably let them take it and do whatever with it if I'm doing something else as long as they give it back.
I hope eventually theres a "donate" system in the PU where you can give a ship over to an org hangar and let people use it (probably with some restrictions so no one can steal it, or in case you want it back)