No not yet but I have thought a lot about it while doing the shifter. I will have the same issue as you, however, the solution I have been thinking about going with is routing one cable on each side of the e-brake. Most of the e-brake mounting is in the middle of it, which leaves room on either side for a cable. The exception is the right side of the e-brake which has the support leg that sort of sticks out at an odd angle. I was going to cut that off and weld something a little different to provide support, while allowing room for one cable to pass to the side of it. This is all with the e-brake mounting flush with the top of the tunnel, like I did with my shifter. Have you considered that option?