You can get the same kind of effect by putting the MB on the VAL.  It'll have that earlier, smoother roll that Rev Leverage drillings are meant to create.  The way I see it, pretend the CG is on a line from the pin to MB if you want to use the more traditional symmetric-style drillings.  Unless the CG is far off that line, or off of it in the wrong way, you'll get close to the same effect.  You probably couldn't do that if the CG was to the right of the pin/MB line as it'd require a ginormous weight hole for any reasonable top weights.

SH