If the cashier's bank is from Wells Fargo and you meet them at Wells Fargo, surely WF is able to check the authenticity of their own checks immediately?

Why would you go through this ceremony rather than just making a bank transfer?

If you receive a wire transfer to a burner checking account that only accepts deposits and not withdrawals, that would be fine.

I think the only risk there would be identity theft leading to payment with stolen money, but they're almost certain to get caught so it's fine.

If that's a concern: If you make sure the transfer comes from a business checking account, they only have 24 hours to report the fraud before the business is on the hook for the stolen money and not you(I think). I'm not sure if personal vs. business are externally-distinguishable in an automated way, however.