Just to clarify, here's how I imagine them working if they were to work perfectly:
You use a Clan Undercover Kit and it doesn't actually change your faction/alignment but it does change who can tab target you for X hours. This should theoretically be possible since it works for red vs. blue battlestation. Maybe it doesn't even need to be consumable and only works until you zone. The basic premise is that it doesn't affect your character/gear in any way, but it does change who can target you and lets you go pseudo-undercover to assassinate someone who isn't paying enough attention.
Alternatively, they would come in different QLs but each one would be usable by any level agent to change to a certain side for X hours (where X = QL / 10).
If possible you wouldn't lose anything when you swap sides except being kicked from your org. Keep your tokens (although only for your side), keep your faction. However, for the sake of balance you would have to have Playshift items be removed on zoning.
Something like this is very Agenty. I would hope that it's something that every Agent wants to have in their repertoire instead of something sort of gimmicky.