It's just 12 months since the winger figured in his first pro-match for Glasgow but he has now firmly established himself as the man in the wide berth on the left flank.
Looking ahead to Sunday's clash with Samoa he said in the Daily Record: "I won't start celebrating my elevation until we start winning when it matters."
Rory, the younger brother of Scotland's other first-choice wing Sean - revealed he'd given up hope of reaching the big time after a year on the sidelines.
He said: "Once things started to happen, they happened at an unbelievable rate. Even now I am still banging my head off walls to make sure it hasn't all been my imagination.
"I joined Glasgow Hawks with only one thing in mind - to get a regular place in their first team in the BT Premiership. Thankfully I was then given the chance to train with the Warriors and it just progressed from there.
"Sean had tried to promote my cause by telling Glasgow backs coach Sean Lineen I wasn't too bad a player - but at first Sean [Lineen] just laughed it off, thinking it was some kind of family plot.
"Now he is the backs coach with Scotland so I suppose seeing was believing. I must have convinced him of my abilities."
Rory is convinced Scotland can respond positively from last weekend's shock defeat to Argentina.
He said: "This weekend is all about winning against Samoa. Some people will argue that the level of performance is vital but in our situation I believe the result is everything.
"We were all massively frustrated after losing so narrowly to Argentina. Sure, we did perform pretty well but the bottom line is we wasted chances and paid the price for making silly mistakes.
"The reality of the situation is that if you lose, then you are not good enough. We must make sure we are good enough to come out on top in games like that