Which bag for X-Pro 1? (with and without laptop)

I suggest that you give any new bag that you get a quick work out with your full gear load to make sure that it is comfortable. This is especially so if you plan to carry a laptop. I have a Tamrac Evolution 4 Messenger bag and although I love the bag (wonderful top access!), when it is loaded with my Mac Air, a DLSR and 2-3 lenses and normal other accessories, it is very uncomfortable to wear as a sling or shoulder bag for long periods of time. I ended up with a Lowepro Fastpack back pack 350 for carrying heavy loads and love it. I now use the messenger bag for when I only need to carry camera gear only (not weighted down with laptop etc.). Good luck.