You will find that when you're used to the Rohloff you change gears much more frequently than with derailleur setups, or even with 8 speed hub gears like the Nexus. It makes sense to have the front brake, used more often, on the other side from the Rohloff shift. Most people have the Rohloff rotary control on the right but it can be fitted on the left if you wish. The front brake then goes to the other side. There's no technical reason not to have the brake on the same side as the gearchange, except convenience. You might also discover that the length of the Rohloff rotary control distances the brake fitting so far from your hand that it is a bit of a reach, so that the brake on controlled by that brake lever is not very controllable, another reason to have the most-used and most-sensitive brake on the other side from the Rohloff gear control.
Andre Jute