We used to get quite a few of the US forces flight-safety publications shared around the RAF units on which I served - I particularly remember one article from an OV1 Mohawk pilot who clearly agreed with everything SASless says about Nomex. This individual chose to wear it even though cockpit temperatures under normal circumstances were pretty severe; saved his life when the aircraft landed (arrived) in a manner different from how anyone but the enemy intended. I used to see quite a few of my contemporaries flying with sleeves rolled up and used to wonder how long they would last under similar circumstances.
One of my instructors also pushed the "fly the aircraft as long as you can" line, but he had a codicil - if crashing is inevitable, undo your straps, drop your keks and sit on the cyclic. It won't do anything to help improve the outcome, but it'll give the accident investigators something to try and - er - work out.