I might suggest you rotate the pegs a bit more flat or about 45*, rather than the near 90* they appear to be in the picture.
Also, on both my Hwy pegs (different on each bike), I set them up so I can either put my boots on them, or really stretch out and put my boots over them (if your Achilles tendons can take it). Changing from driver pegs to hwy-on or hwy-over changes the pressure points on your bottom, and makes a big difference on longer rides.
Staying off them in the twisties is good common sense, but remember, in any emergency, your front brakes are 80% of your stopping power (and perfectly safe alone, esp in a straight line), so don't ever wait to brake until your feet are back down on the drivers pegs. It is intuitive to jump back to the pegs when something happens, but the hand brake is right there all the time.
+1