The Rockwell route avoids the two crossings of the North Fork Lone Pine Creek. It hugs the base of the wall on the north side, and on one spot actually ascends part of the wall, follows a ledge, and descends back down coming out where the regular south side route comes back across the creek.
The
videos here were made along that route (end of video "NFLPC4", last of Part 1, and all of Part 2). I actually watched those videos just before starting the hike to refresh my memory.
One of the pictures on the route last weekend:
And Saltydog, you will appreciate this picture: Dipping and Drinking.