My wife and I have been churning and MSing spend with Chase for half a decade. Cycled through Hyatt, United, Southwest, Ritz, Marriott, etc. Currently having a grand time with couple CSR and still crushing out a couple old Inks with office store GCs.

Lately we've been considering opening a Chase Performance Business Checking Account as well as the requisite Chase CC. Having all our accounts with one institution, earning Chase CC bonuses under a separate EIN, and having free access to local ATMs and banks is pretty compelling.

I'm wondering what the downside is? If this could negatively impact our ability to churn and MS I'm not interested. If the impact is nominal then I may take the leap. Thoughts?