wow totally wrong forum bud!
But anyway, at my shop we use high pressure to break up chips, thats all it is for. HP Coolant is not meant for cooling as you may think, but rather to bust up chips.
Sometimes you just find an insert, speeds and feeds that work brilliantly, has amazing life and leaves great finishes, but the chip it makes is less than ideal. High pressure allows you to keep the same tooling and make the chip the way you want it. Also in some materials in general the chip just does not like to bust up, a few come to mind for me and im sure a few will come to mind for you.
If you've ever dealt with the nighmare of chipwrap marring your beautiful finishes, then high pressure is an option you could look into. Although for the work you say you're doing I dont think it would be worth while for its cost, but ultimately that is your decision.