I've said this before (mostly in regard to shoes, but it applies equally well to this situation) - There are many items of clothing that work great when you want to go out at night in jeans. There are many items of clothing that work great when you want a fairly traditional professional look for business. But there are relatively few items of clothing that work well at both of these extremes. (There are some. Exceptions exist to every rule. But they're just that - exceptions. They do not invalidate the general rule.)
In the long run, you're usually better off buying one item of clothing for casual wear with jeans, and another for professional wear, and not trying to get away with a "does it all" item. Yes, I get that this may mean a somewhat greater initial expenditure. But since the "does it all" item will most likely eventually prove unsatisfactory to you for at least one type of wear (if not both), it's not necessarily wrong to just pay the money it takes up front, and get it right the first time.
Or, you could simply decide to give up the "going out at night in jeans" idea, and adopt a somewhat more mature look. Thus avoiding the need to get a "goin' out" rainjacket, along with a "going to work" raincoat.
FWIW, for many years, I managed to get away with but a single tan London Fog trench coat, for both work and play.