This is never going to happen for the same reason Apple and Google won’t let you use different backup/restore methods.
replyI looked at snapseed a few hours ago and backup must be done per profile.
replySo you can totally have different profiles with different backup servers/credentials and decide to nuke one before flying or crossing a border.
Obviously you can't expect having 2 whatsapp or signal accounts on same number but you can always have several SIMs.
The good thing is with profiles you can totally seed a profile for a few weeks before travelling.