Hello Vin,
I have searched for that thread a couple of times between trips without success. It was a fairly recent one, and I believe it was posted in mid-late June. Unfortunately there is a gap there between the oldest Forum threads and the Archives.
Best I can remember, there was a shop in London that sold custom-made parachutes. I think the source was attributed to
Ira Jones.
Personally, I have no sources acknowledging any Allied pilot who wore one, but I remember reading somewhere that
Elliot White Springs wore a parachute late in the war.
I know this is not much help, but maybe someone out there has more info.
Best Wishes,
Gary