I'm going to sound stubborn here but, in many ways, I am a grumpy old man. Call it perks.
Jens, that jacket does look good on you. However, it's not a look I would recommend. As part of a uniform it is an item of clothing designed, amongst other things, to make you a part of something bigger than an individual. Call it an army, a brotherhood, whatever - the bigger point is when someone puts it on they're saying they stand for the wider values of that organisation, they're saying they've earnt the right to wear it. If that doesn't apply, certainly in the case of a uniform with a little attached history, then I don't think that person should put it on.
I don't suggest for one moment that by wearing that jacket you're making yourself out to be a Soviet officer or anything like that. Like I say, it looks good on you and that's probably why you choose to wear it. You could probably achieve a similar effect in a smart civvy jacket is all.