Vlad
Well I would like it if you could set up 2 users in Orion for iPad settings, and if once you did there was an icon like this:
Click on the icon, select your user and have the tabs replaced similar to normal and private mode replace each other, just that it's another layer of that, e.g.:
User 1: normal mode, private mode
User 2: normal mode, private mode
with different cookies and history for User 1 and User 2
Of course browser sync would only work with User 1 (or alternatively User 1 and User 2 could each enter different credentials for their browser syncs)