Having had a person who lives in my hometown, looks like me, speaks similar to me, but has another personality, made different life choice, and who I've never met, I can attest this sounds not only creepy, but downright terrifying. I do not want anyone else to suffer through this Shakespearian confusion of identity by the means of GenAI, epecially if it's with criminal intent.
BTW, what I've learned from my ordeal is that people are general bad at identifying people outside the circle of family and close friends, or using reasoning to discern lookalikes amongst outsiders and strangers. So the AI tool doesn't need to be that good for use in business scams.