Out of interest, I wonder how easy it is to leave as an SO. If you'd been there 2 or 3 years as an SO then what airline will actually employ you with no P2/P1 u/s time for that period. You may have significant hours before that but you're not exactly current are you? I attended an Emirates road show last year and they said that SO hours count for nothing in their eyes.
Having said that over the years I have come across the odd CX SO while at various airline interviews, so maybe some companies don't have a problem with it.