Yup, I put in conduit runs on both sides. I know I had to make holes on one side, though I don't recall specifically that it was the right, and I'm not finding the relevant build log entry off the bat.
The right side is my main wiring route, and honestly it's so full that I'm skeptical that I'd ever pull any additional wires through for retrofit work later on. The left side is mainly there "just in case," but at the moment it does house a coax run from the ADS-B receiver on the rear avionics shelf to the antenna mounted just in front of the rear seat.
-8 fuselage in progress (remember when I thought the wing kit had a lot of parts? HAHAHAHAHA)