Pretty funny video. HP didn't show the long boot up time, or warm up time. They also didn't show the carriage belt snapping off in the middle of the print.
I print double sided prints all the time on the roland. It's pretty simple. Definitely not as simple as the HP, but that video was more comedy than accuracy.
I like the HP for the innovation, but it's not there in terms of build quality for my needs.
It would be AWESOME if Roland incorporated an OMAS sensor. One thing I really dislike about my Roland is manually adjusting feed calibration ALL THE TIME.