You got it exactly P. I even carry a watch case in the car with me just in case I get bored with the watch I am wearing. Usually takes 3 - 5 minutes lol. Although I just picked up a LBJ that seems to get stuck to my wrist more regularly than others.
I remember one day when I forgot to wear a watch for three minutes. I had this weird sensation like something was cut off. I checked and that was not it, then I realised I had no watch on. Luckily I had a spare in my pocket to tide me over until I could run back to my watch box.