Ni Thomas , I always thought " bit daft wearing a flying suit " especially in a light aircraft as the urine extraction element increases by a factor of 10 when you walk into the flying club. That was until a friend of mine flying in cyprus had a very minor fire in a PA28 unfortunately this fire was under the instrument panel which as you will no is pretty much right where your legs are . He was wearing chinoey type pants which set alight . The passenger put the fire out with the extinguisher and subsequently landed the a/c . The pilot had major skin graft surgery on his thighs and was in considerable pain for about 6 months , all this for a fire which they say lasted about 10-15 seconds . Nomex and the ohter stuff would no doubt have prevented these horrendous injuries . They are not the be all and end all but anything that gives you that extra time to react has got to be a good thing . In this case I think they would have helped but who knows.
Not a nice tale but I think it goes some way to showing some peoples thinking . I personally wear one when I know the mickey taking lags wont be there . Doers look a bit odd when you dont walk out to a harrier but hey flight safety an all that.
You may be sted to know the fire was put down to a combination of wiring problem to the battery master and some eeeejit placing a non emptied fuel strainr on top of the glareshield and letting fuel run down the back of the panel . they say it would have caused a short circuit and not a fire had the fuel not been involved , but ho hum