I tested the set-up with Remote Assistant and FastPictureViewer somewhat more, and with a low resultion JPEG (still good enough for the LCD), it only takes 2 seconds. If only the JPEG would be sent before the RAW file (or not sent at all, only stored on the memory card), this would be a perfect teathered set-up. Then the image would be up in 2 seconds, and while you look at the screen, the RAW image could be downloaded.
To change the program (or camera firmware) to allow for an option where RAW files are not transfered, or even easier, just change the order in which the files are sent, should not be too much work. Then you just shoot RAW + low res JPEG and you have a perfect tethered set-up.
Anyone with good contacts at Pentax?
Best regards,
Haakan