OK I gotta address the Nike thing.
For me, I grew up on old school Reebok's and Adidas as well as Chucks, but when my feet basically got flatter as I got older, Adidas shoes started to hurt my feet and Chucks were Chucks, they are actually more comfy now that my feet are flat and Reebok's, outside of the gum shoe retro pairs, I am not a fan of anything they make besides the one time I gave in on a RBK pair back in the day for the Pumps.
Can I mix in my dress shoes?
1.
Berluti Chelsea boot.
Why: Yes they are expensive, but they're real leather and I've had leather shoes from 19yrs ago that I have re-stained and re-soled, quality lasts and Berluti makes fantastic shoes. These go well with jeans, dressed down casual suiting, etc. Just a gorgeous pair that I love wearing.
2.
Air Max 1 - Pimento
Why: I love the color-way, the suede, it looks nice but it's a little tougher to wear because it's well, it's red. I have a nice pair of black & gray Traveler Jeans from Banana Republic that look really good with this, but they're really comfy (I have an all tennis ball color version of this, don't ask why, and a lighter blue version as well, just a comfy shoe).
3. You're gonna laugh, but it's a new pair I bought a few days ago that I have been wearing a lot as my "errands" shoes -
New Balance 574 Sport (The black one, I am debating getting the gray ones, I have them on hold at this sneaker shop until tomorrow).
Honorable mentions:
My infrafred Air 90's.
My Nike Roshe Runs All black
Converse all black leather low top
Adidas Foray (Dark/Light)
Steve Madden Rivars - Not anything special, just a nice shoe for literally jeans, slacks, suiting, etc.
I'll stop at that. Otherwise it's a long list, I love all of my shoes, and yes I am one of those dudes that cleans them and puts them away after. Remember the Alfie remake with Jude Law? His shoe wall? My walk in has a shoe wall, shoes boxes with polaroids of what's in it. I'm just....organized, not OCD at all.