I am not in the Mark - but have several Mark coins. When I get around to joining, I will ask if I can use the first one I ever received by giving it to the lodge to give back to me.. Knowing these things will not take away from the ceremony for me..
As an aside, for years people tried to get me to join Chapter for "the genuine secrets of a MM"... knowing something of Masonic History, and the development of ritual and degrees, "what a load of bunk!" thinks I... what made me join Chapter was a fairly detailed walk through of part of the ceremony talking about the symbolism and lessons of the degree, that's what made me join Chapter. When I get around to Mark, it will not be to find X and receive Y ..well, do some of the things I already know about, again it will be for the story and symbolism..
If I was a Mark Man, I would not hesitate to give a Mark Token to a WM of a Lodge I visited and say, if he was not in the Mark, one day you can find out what this is all about, or just feel free to keep it as a souvenir of my visit.