Too easy.
The only thing to be mindful of is the clearance to the right-side indicator (easily fixed by loosening it off a bit using an allen key), and taking care not to scrap anything while tightening up the mirror nut on the same side. Other than that, it's just a case of undo the nuts holding each mirror to the bars, swap them over, and tighten everything up again.
It makes quite a difference to the appearance of the bike, and is a definite improvement. Love it! It's such an easy mod to do, and gives a great result.
I also adjusted the headlight while I had the tools out, as the default alignment gave me great illumination of the front tyre but not a whole lot else! I didn't bother drawing lines on the wall like the manual said to do - eyeball alignment worked a treat, and I only needed to make a minor adjustment after a test ride.
Looks nice, Bars aren't too high, just right