That's a good question HJ, like you I look forward to a learned reply which will no doubt arise.
If it helps, when I did the 'Clifford test' lol, I could feel it push as the pressure built. No great pressure mind. My peace of mind, using the quiet lanes was to do a few emergency stops. Tank stops on a ninepence! Certainly not difficult to lock up the rears
If yours is similar I'd go with it. If not, when was your fluid last changed?
good luck