On Tuesday, September 15, 2020 at 4:00:32 AM UTC-4, Matthew Scutter wrote:
...I believe both the PSA jets and the JS jets have approximately
the same climb altitude, ~1500m, and range ~110km?

Paul Mander figured the utility of the jets in his ASH-25J were
about equivalent to electric (heavy load of jet fuel compared
to batteries, by total available climb height). Of course jet
cruises faster.