I'm more comfort and self image, and sod what anybody else thinks. Plus I fly open cockpit anyhow.
Various copies of WW2 jackets are available, they're a joy to own and wear, apart from the minor point that they really don't have enough pockets. They do need oiling once or twice a year (and usually within a month of buying them) with a suitable leather cream, or the leather loses all the properties you want of it. If you want one, buy one - just don't expect them to add anything to your credibility in a PA28 !
RAF Mk.3 cold weather jackets are very very green, scruffy as heck, but incredibly comfortable and practical. You can buy them on eBay from anything above £40. For actual practicality, they are the best thing you'll ever find.
G