Best pal and fellow Geordie recruit Conor Newton has also followed the road north and another Magpies teenager could soon join him.
Now Dummett has encouraged any youngsters offered the chance of a switch to Scotland to grab it with both hands.
He said: "There was guys from Newcastle coming to watch me and I also went back down a couple of times and spoke to the manager down there.
"He had been getting reports on me and was pleased with my progress. That was great to hear and he obviously meant it as he put me straight in the squad when I got back and then gave me the second half against Brighton.
"A lot of people see the SPL as a Mickey Mouse league but that's not how I view it. There are a lot of good players up here and a lot of good players at St Mirren.
"Conor Newton is already up here and if any other Newcastle lads were thinking about joining St Mirren on loan I'd definitely recommend it. The SPL doesn't get the credit it deserves."