This is a good excuse to post these shots again . Last year I tested out what it was like to fit a 6'2" body wearing an Irvin in a MkV Spit. I fit in easily enough but it was cramped and the jacket certainly did make a big difference with regards a sense of mobility.
Tim, your other point about cockpit heating was confirmed by my Beaufighter Mate. You might remember he didn't even recognize the Irvin I showed him as our flying kit, (he actually thought it was American- a B-3). He was at Dallachy from 1944 and only wore battledress and when on the ground a great coat. Some of them like the CO (WC Colin Milson) had a version of the sleevelss shortpile Irvin waistcoat. The Beaufighter had a comfortably warm cockpit and as we well know sorties were invariably low level.
Tim, your other point about cockpit heating was confirmed by my Beaufighter Mate. You might remember he didn't even recognize the Irvin I showed him as our flying kit, (he actually thought it was American- a B-3). He was at Dallachy from 1944 and only wore battledress and when on the ground a great coat. Some of them like the CO (WC Colin Milson) had a version of the sleevelss shortpile Irvin waistcoat. The Beaufighter had a comfortably warm cockpit and as we well know sorties were invariably low level.