I see no reason to go high pressure and I have no intentions on going more than 10 gallon batches. I have a regulator I could put off the boil kettle, but it's not needed even on 10 gallon batches. I also started using a 1500W heat stick in the HLT to heat strike water and to help get wort to boil. Mainly to save on propane.
It's nice to wake up in the morning, plug in the heat stick and go back to bed, grab coffee, breakfast, etc and get your stuff ready while the strike water heats up. It's a supplement to propane, not a replacement at that small wattage