Being RAF, I had both blue and green woolly pullies; I also had a couple of green ones from my TA days, but for some reason they didn't have epaulettes. I much preferred the woolly pully to the hideous 'Thunderbirds' jacket that was the alternative for working dress.
I had a huge clearout last year, and discovered amongst nearly 30 years-worth of stuff (just why does it feel so good to 'win' kit?) not only a woolly pully, but also an aircrew 'bunny suit' - if Buffalo made romper suits, this is what they'd be like. It was worn under an immersion suit, and I acquired it after going flying with 7 Sqn's Canberras. A couple of useful bits of kit I still have is the aircrew roll-neck sweater - lightweight, warm and unmeltable, and my flying gloves. Apart from that, all I've kept is my flying suit, just for nostalgia.
The civilian wooly pullies that are popular for shooting and so forth are still very much in vogue, in suitable colours, with some officers for cool nights in the desert. Now I work with the military as a civilian, but can still deploy. Last time I was in Iraq, as I lay in my Corimec (all to myself), complete with aircon and heating, I often thought about the days I spent cold and damp in various exposed parts of the UK, watching hexi telly before trying to sleep sans kipmat (I remember when they were first issued), in a 58 pattern doss bag with large pack as a pillow.
One thing I have noticed is that kit today doesn't smell like it used to - even a brand new 58 maggot smelt utterly revolting, and all the clothes stank of mothballs.