Can you have more than 2 identities through multiclassing? Can you stack identities gained from multiclassing?

[Reksew_Trebla]

Say you are a Vigilante. You then multiclass into Rogue or Ninja with enough levels to take the Advanced Ninja Trick “Deep Cover”, or multiclass into Nameless Shadow Rogue or Masked Performer Bard.

Do you have 3 identities, or 2?

[Slyme]

I could see it going either way, since there is no language stating anything about stacking identities in any of the alternate identity classes or archetypes.

A definite case for 'Ask your GM'