bigski ...sideways ribeye doesn't sound like it'll work unless it's about 1.5-2" thick with a nice fat strip running down the side.
I've done the vertical cook a few times with sirloin and rib eye. While it's not as nice as the ones you've shown in here, I still do a nice slow rendering and then the flat sides. It gives a delicious med-rare that I enjoy devouring. "thumbsup"