For what it's worth, it's working with PR1.3 for me. It didn't work immediately after the upgrade, but I ended up re-flashing anyway, then installed advanced-interface-switcher and it worked.

I see there are a number of suggested improvements in there already - so I hope I'm not repeating what went before, but my main gripe with it is that it won't shut down BT while there is an active BT connection. So I end up using bluezwitch anyway because it can do this.