No, you can you use them as your checking account to get fiat to Coinbase / Gemini
There is no worry about any issues with other checking account providers since although it looks / feels / acts like a checking account it's actually part of a brokerage account.
I know several people who have used them for checking while only keeping a minimal amount in the brokerage part.
That or you can just fix your issues with chexsystems. Call your state banking department if you can't get satisfaction:
https://www.csbs.org/state-bank-agency-contact-quick-access
-Dave
Thanks for the link. I filled a dispute with check systems sending them a copy of my ID that had an issue date after they claim I was dead so I hope to hear back from them.