...calibrated to deliver 15 -20 psig of dynamic pressure"

Any pressure regulator supplying a constant pressure...

There is definitely a potential surge problem there.

The EDS regulator is special in being designed to switch from no flow to lots and back while keeping the output pressure reasonable.

If you wish to gamble with yourself, then perhaps a surge tank after the regulator to improve the odds. A pulse-ox to keep an eye on the contraption might also be a good idea. But the words 'good idea' might not fit the situation?