"Panasonic GF1 + 20/1.7 lens (what I often use), Sigma DPx, Leica X1, and the soon to be released Fuji X100"
I'd love to walk with any of these but being on a tight budget, it seems the s95 is great bang for the buck (and so tiny!). I have the 5d2 with the 24-70 f2.8 for bigger jobs but what a heavy beast it is to lug. I was even thinking about selling the 5d2 to buy a more packable Bessa R or Mamiya 6 w/ 50mm lens... As soon as I finish this video project in May...
I feel like I've lost a lot of what I initially loved about photography by graduating from a Nikon FE, to a bulkier Nikon D100, to the bulkier Canon 5d + 5d2. I feel so conspicuous with that thing, even in wilderness environments.
JJ Cale was spot on. "Travelin' light, it's the only way to fly."
And many thanks Mark for commenting on your s90!