The G1X comes with a removable, not built-in, lens cap. Like many others, I would have preferred a built-in lens cap. However, I have some good news about the lens cap: The lens cap can be washed and dried in a conventional household washer and drier. In my never ending experiments with the G1X, I have proven this to be true.
To me, the G1X lens cap is just another lens cap and lens caps go in my left back pocket. True to habit, after setting up for a time lapse sequence, I put the lens cap in my pocket and proceeded to do a little weeding in my garden. Of course, I got dirty and sweaty in the process and decided to clean up before retrieving the G1X.
So now I know that the G1X is pocketable and washable – well, the lens cap is washable but I don’t plan to test the camera body.