I looked into the Photosmith app as a possible solution, as it syncs with Lightroom. I thought that maybe I could use it on the iPad when on a trip, to download my RAW files from the camera (I'd still need CameraRAW for that, though) and then, when I got home, I'd have all my RAW files already in Lightroom and could go on shooting while away. But, I've decided against that and will probably just opt for using a high-capacity USB flash drive to offload to, or possibly a couple of spare 32GB cards. That way I can go on shooting if my card gets full while away. As for Lightroom, well, I can just download to my laptop when I get home, you know?