$1300 to open doors to more shooting opportunities/possibilities vs what I've invested for my Canon kit that doesn't? Also, I consider the fact that I have a closet full of lenses each of which cost around the price of the x100s or more? In a nutshell, just do it!
I think this is a point not many take into consideration. Most of my Canon lenses are more costly than the X100S... in the end, it's such a minor investment that it was hard not to buy.
The rumored FF fixed is not what I want or need, pretty much have that covered at this point... I may not even need a Fuji FF ILC, it's more of a want than a need. The thing about this X100S is that it opened doors for me that nothing else I own did. It met a need and a want all at the same time.
With the GAS situ (I suffered for years), I collected cameras... Canon, Rollies, Leica, Nikon. Much of which stays tucked away in Pelicans or in cases. You only have two hands and can carry so much... I began to realize what was important was finding gear that helped not hindered. My Canon's help with work, the X100S helps with the family and everything else I enjoy about photography. It brought me back to the days when I only had my dad's old 35mm, beat to hell and I didn't care. It was easy and fun, I enjoyed taking pictures for the sake of taking pictures. It wasn't about bodies and lenses at that time, somewhere I got a bit lost and afflicted with GAS. I'm recovering now, baby steps... at first it was hard to not carry the backpack, the 5D3 and yea a second 5D3, oh...and the 50, and the 135, oh...yea the 70-200 might need that and while I'm at it better take the 24-70... it was a vicious cycle. It is totally liberating, I reach for the little Fuji and then grab the diaper bag... that's it!
So you goona start that thread John or should I? Dylan and John, you guys on Flickr? Local to Cali? I use Flickr for social stuff, camera clubs and meet ups... you guys every done any of that? Check page 4 of this thread... I have my profile info there if you're interested.