WSUS server priority listing

We have multiple WSUS servers across a highly geographically diverse network and I need to know if we can set up SCCM clients to talk to WSUS servers on a priority list for patching.

Here's an example:

Client is based at a network of 192.168.50.xx

They have a local WSUS server on the local network at 192.168.50.17 .  The client travels to another office that has a 192.168.32.xx network and cannot reach their original WSUS server.  Can we set up a priority list that states because the original WSUS server cannot be reached patches will then be downloaded via the internet, but only the approved patches that were published via SCCM configuration policy?

Thanks.