I wouldn't. It's definitely shady.
I just described the situation to my wife and she said "Hell no! I would just block him immediately and go on with my life"... lol
You wanted the watch... you now have it... just block that guy and move on.
Congrats on snagging one! Mine will be here on Tuesday....
Two more days for you! Yeah, my wife was feeling the opposite. She was curious as to why he wanted it back, but she doesn't really care either way. I'm keeping it. Think I finally got it all figured out, it's pretty cool.