Hi Russ,
I apologize for the delayed response. This is a good idea and is currently in our feature request list.
Until this feature gets implemented, you might be able to use multiple sync buttons each assigned to a different host ID. This would allow the user to at least use the back up host (2nd button) if he gets an indication that the first sync connection failed.
Obviously, your suggestion of a back up host is a better option but this idea may serve as an alternative in the meantime.
Thanks.