My two favorite cameras / lenses for "satchel over shoulder" convenience at the moment are:
Fuji X-Pro 1 + 35mm F/1.4 and
5D MK3 + 40mm F/2.8 pancake.
40mm on the 5D MK3 is a pretty good length and the "Shorty Forty" is an incredible lens for the money.
Which one do I prefer?
The money's still out on that one, but I've been reaching for the Fuji 90% of the time