That's an interesting question. I've thought about how I might respond if someone were to ask me if I believe in "once saved, always saved." I would probably respond that I believe that although everyone will will ultimately be saved, the road one takes to that destination can be long, winding and painful (with lots of unnecessary detours and switchbacks) or can be straight, simple and always moving closer.Does the debate over "eternal security" have any meaning to a proponent of CU?
Can someone "lose their salvation"? In the immediate context, yes. In the ultimate context, no.
Hope that makes sense!