I'm building up a wheelset with for a touring rig and built the front wheel with a 70s Phil touring hub (36h), DT Swiss TK540 rim, and DT Alpine III spokes. I was planning in building a rear wheel with probably a Velo Orange Grand Cru Touring hub and the same rim and spokes.

I've heard debate on the internet about dishing and spoke tension as to whether you should use thicker gauged spokes on the drive side of rear wheels, or even that only the trailing spokes on the drive side should be thicker gauge. Other than weight difference in spokes, does it really matter?

If so, what spokes would be recommended? Alpine IIIs only come in one gauge to my knowledge, so what spokes should I be using on either side?