You do have to take 30 seconds to remove the case to get at the trap door for the battery and the SD card. Quite frankly, there really isn't a better way to attach the case to the camera. Velcro? Honestly. You CAN charge the battery in the camera with the USB cable which can be connected to the camera without removing the case.
Yeah, afraid so. I haven't had to do it yet but I don't see it being a big deal. I don't see how the case could be secured to the camera without a similar method. Doesn't the Sony case do the the same thing - for $85!