Zipper update: went to CNCPTS, brought my Aluminum Flight back in small to hope that they'd exchange for the same size. They are all sold out, unfortunately. However, I tried on both the Parachute and the Bogota. The Bogota Bomber is a great, simple, timeless piece. Details are nice, I tried olive, but would prefer the black or charcoal. Think I'm going in on the charcoal. It's super warm, and looked great. I did size back to medium for it, but loved the fit. Really clean, underrated, and great price point at < $400. If you're on the fence, give it a look. It's really a nice bomber.
I ended up keeping my Aluminum Flight. The zipper works, it's just not always an easy immediate zip up. My boy at CNCPTS said that the Bogota had the same zipper issues. It just seems like the bottoms of the RiRi zippers on some of the outerwear this season are stiffer and harder to zip at the beginning of the process. If CNCPTS had the black or charcoal Bogota, I would've exchanged. The olive is a great color, just have so much green that I needed a black or grey. The oak is different enough for me to justify keeping the Aluminum Flight.