Unfortunately that cannot be done. It was a design decision between the way the
other version checker does things and "my" way.
I chose to go with the current way because I prefer to spot alerts, not "everything is okay" messages. Going with the "other" way would mean I would have to dismiss the "everything is okay" message once a day - not something I want to do.
Also, the "other" way does not support removing a product from the list of outdated mods once an XML file has been imported, which I felt was a serious design flaw.
Dual method with support for switching is unlikely to be added if I'm honest - it would take up a lot of development time without making that money back.
Fillip