If I DID decide to get the Vision Pro, it would be with the full intention of returning it within the returns window. I BET you I would be bored of it and the novelty will have worn off before the end of the window. I did the same with the PSVR2, was literally bored of it within a couple of days (nothing new over PSVR1, but GT was amazing to be fair).
I am in the UK and it won't be here for a while, by which time I don't think there will be much intrigue left to be honest (it will have been dissected and discussed by hundreds of YouTube videos by then). When that time comes though I would have no hesitation in demo'ing it. Also, if 'spacial computing' is truly transformative, I should WANT to keep it and completely change my mind right? However I think we all know that's unlikely to be the case.
And before people moan about people who do this, these companies make an absolute fortune off you, Apple in particular. Plus the returns policy is there to be used, so grow up and use it as per your consumer rights. Why wouldn't you use it to your advantage is the real question.