Depends on what is more important, form or function. I like to have both, but edge towards function. Also depends on riding environment. I ride year round (So Cal) and usually only don't ride only on first rain (in So Cal that could mean 9+ months of oil on ground) and really heavy storms (which I don't always avoid).
So, a jacket is important, but in a crash over 20-30mph, there is likely to be some sliding. You need the lower half protected too (I know of what I speak - my knees have scars on top of scars from skateboard, road and mtn bike, and m/c accidents from over the decades). Leather chaps on the missus can be might inviting... but don't want that tush hurt now, do we.
As the saying goes, I'd rather sweat than bleed (and I've bleed before and done black leather in the summer thru Las Vegas). Long ago I picked up an Aerostitch from a fellow rider who no longer fit into it. I've ridden in sub freezing temps and 120 in Death Valley (works great in the whole range). I love this suit (probably got over 80k miles on it). So we ended finding someone whose wife started having kids and decide not to ride anymore, so sold her stitch for half price. Suit had only been used a few times. As for function, heard from a number of people who had above legal speed get-offs, and walk away sore but unscathed wearing the suit. I've got the optional hip and back protector. I can't recommedn the Aerostitch suit highly enough for those ride in varied weather, want full body protection and like the idea of talking the suit off and having street clothes on underneath
Downside - funny looks from people who wonder why you are wearing a parachute or snowmobile suit in the summer (in the desert) - oh well. I carry my helmet with most of the time to answer the puzzling looks.
Good luck deciding
