Sean has only been an internationalist himself for a few months, but the message that will be imparted to his sibling is that without self-belief nothing worthwhile can be achieved.
"What I'll tell Rory as a last piece of advice is to have confidence," said Sean in today's Evening News. "What is the case in the Scotland camp undoubtedly is that if you are good enough you're in so like the rest of us he has everything to play for."
"Rory is a very, very good handler under the high ball and has a better kick on him that I have," said Sean.
The fact that both are physical and robust has been pointed to as a reason for trying to unsettle the more lightweight Welsh. But Team Lamont are singing from the same hymn sheet in claiming that to concentrate on just one aspect could be their undoing. Sean says: "It isn't just a case of sitting out on the wing since the job requires you to go looking for work as often as possible.
"So, you have to get involved to the extent it doesn't really matter whether you are marking up against somebody who is light on their feet or a big direct type.
"You've got to play your own game and when it comes to allowing for the opposition there is an element of looking at what they have got to offer, of course.
"But what that comes down to in the end is adapting to all types of opposition including the Welsh whose wingers, Shane and Rhys Williams, are smaller and elusive rather than big powerhouses but we'll be ready for anything they test us with, I'm sure."
For Rory the international call-up is also vindication of a decision to move north of the Border from Northampton. "In achieving what will be a dream come true I am grateful to have come out of a phase where I seemed to be regularly hampered by injuries," he said. "Joining Glasgow coincided with a spell where I was able to get myself fitter than I have been for some time and while I didn't come north expecting a cap at this stage I have to be grateful for the assistance received."
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