Luxury Work-Friendly Men’s Backpacks

Issue is that it will destroy your padding/shoulders on your suits - that said Filson is pretty solid.

Backpacks in a formal (or even semi-formal) office setting has to be the worst trend out there. You're not headed to sixth grade, you're headed to a professional job. Get a proper shoulder bag or anything else other than a backpack. 

Slightly more fashion-y but I got one from Want Les Essentiels that always got compliments and could fit a laptop and a change of clothes or gym stuff. I guess it depends on your group's culture but in my experience no one would actually care what kind of bag you have and people at all levels had backpacks.

I was always of the shoulder bag breed in banking but in PE used a backpack which my firm gave me due to how convenient they are despite you indeed look like a child with one. To echo above, literally no one will care what bag you carry unless you are regularly bringing it into client meetings w stuffy UHNW folks, which you probably won't really do in banking. So carry what you're comfortable with. I got my shoulder bag in Florence while on vacation there but have also carried the typical banker duffel provided by my firm. Honestly if someone you work with gives you shit about your bag, especially if it's just within the office, then you probably work with a bunch of dickheads lol