The newer 1x2-2x2 up bracket accepts some sideways single stud travis bricks on the under side. As mentioned above, the bricks are the same height as the full depth of the bracket, that is, 9.6mm. The result is a simple way to have studs up and studs down. The space inside the bracket can be filled in a variety of ways, even such that the connection is strengthened. The clutch is certainly adequate on my 2x4 example but some extra points on a large assembly would be recommended.
My first thought at this point is that a headlight brick would fit in there nicely. Except that you then end up with a slightly off centered half plate deep stud. Maybe it gives you the offset or the greebles you need. Instead of the plate and brick, the bracket could be squared off with a brick and tile for that extra special grooved look. Add bricks as necessary above that.
One more thought is that the "bottom" two single stud travis bricks could be replaced by a 1x2 brick with studs on two sides. This, coupled with the single stud travis bricks on top, would give you opposing studs on another axis. Or add one more plate to thicken this assembly and you are compatible with the dice.
Someday if you're bored, I recommend grabbing a few brackets, bricks, and plates and playing around with them. If you've got some other mean lean examples, feel free to link to them in the comments.