Both of my wallets are LV, but if I found one of another brand that I liked, I wouldn't hesitate to use it. Mixing and matching bags with SLG's is totally fine.
I have a patent MK long zip around (same size or even seems alil bigger then azippy) in borduex shes nice and even has a MK plate infront n can hold alot
I am using my new Michael Kors Hamilton zippy continental wallet in black with the lock detail...It goes with LVs and other I own. I love mixing! and I love the wallet cause my phone and lots fits so I can use it as a clutch. love it!