People have been asking about bags, I just got one for my X-E1

Timbuk2 snoop camera messenger bad would work.  The camera gear will zip completely in the insert. The laptop area isn't padded, so you may want some sleeve (and it won't zip, though). But it has some zip pockets on the front for memory cards and batteries--admittedly those pockets are a bit small.  My small one can fit an XP1 with 18-55 and 35, EF20, and X10. The X10 and EF20 share the slot however.

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Brian. Too much stuff; not enough stuff.