I've been hearing certain people say they have better luck switching a sprint phone to verizon which I think is odd since they both have to comply with the settlement from the previous lawsuit.
Then again I'm no expert on this matter (though should know more next week) but I agree the only issue is getting the ESN onto Sprint's network and if need be we could look for an Android ESN DEC/Hex changer here or at XDA. Maybe I got ahead of myself but from the lawsuit and the original press releases I've assumed people have been able to transfer devices though I've never even thought about it until now as I've usually been pretty happy with Sprint's offerings compared to Verizon though I wish everyone would carry an iPhone but that's another topic all together.
I doubt anyone will have much luck at a sprint store but let us know if you have any luck. As I also mentioned regular customer care reps may not know about this either and may require a conversation with a tech support agent. I say that because I doubt covering the ability of activating a non sprint phone is covered in any real dept in any training at this time and while the info should be available to any employee they may not know where to look and some will undoubtedly tell you no because it will seem ridiculous to them if they've never been told.
But lets just say I know people who do work for wireless companies for years and they were the ones who remembered the ability to use a phone on another carrier and that each company was working on a way to allow this to comply with that settlement via the Open Device Network I think.
I too will post more definite info this Sunday night or Monday night when I've had a chance to talk with some seasoned employees
