It's not going to be the sword in the stone prize forever, and I think that other players should have a chance at getting it once it is retired. Most of the other SitS pins are tradeable, why not this or the Thanksgiving pin from November? By the time the month's over, this pin is going to be as common as Buried in Treasure, if not moreso, so it's not like people are going to be making a fortune off of them. I say let us spread 'em around to the people who miss out for whatever reason. I'm planning on racking up a bunch of extras just in case, even though they might wind up just cluttering up my inventory; if it does get made tradeable once it's retired from the stone, a lower-value magic like that'll be a really fun, cool item that'll be within reach for newbies who don't have much of anything yet.
And really, time and work? I rode the dark rides in between trips through the ride-a-thon yesterday (giggling to myself all the while because I was getting in a ride on Peter Pan's Flight while waiting on my fastpass for Pirates of the Caribean - I mean, how cool is that?) I got a SitS pin about every other ride and got the sword out about one time out of three. It couldn't be easier. I understand why it's not tradeable right now - for the same reason that the Dreams prizes couldn't be traded until the beginning of October, I'd expect - but once the pin is switched out again, I really hope they let us trade them.