If you have the original sensor that failed, you should be fine...assuming you know which wheel has the aftermarket sensor in it (if they left it in). I sent you a PM.
My local Discount Tire does not use clone-able sensors. I'm not sure why. Even though they have the right tool to do a TPMS re-learn in my Mirage, they looked at me like I had 2 heads when I asked them if they could clone sensors. :confused: They didn't know what TPMS sensor cloning was. Granted...these were tire techs getting paid $10/hour. Maybe the store management might have known...but I'm not sure.
The replacement TPMS sensor of choice at my local Discount Tire is a "multi-protocol" TPMS sensor which is explained in
this post.
I do agree with you that it's easier to clone a sensor than to get into some of these more challenging re-learn processes (like Mitsubishi requires).