Oh and if NZC do this I will literally scream. It is the worst of both worlds and will be a GIANT copout by the NZC board (which of course makes it the most likely option). The way to attempt to fix a divided camp is not to build a f'n wall. It will just guarantee the captaincy dispute will continue for as long as the captaincy is divided. Any time we perform better in one form than the other there will be questions over that captain taking over all forms.
The only time this setup can work is if your experienced captain wants to retire from (for example) limited overs cricket entirely, but continue to play tests. It means you can blood your new captain in the limited overs format, and continue to learn in the tests, while gradually taking more responsibility.