Tommy Seymour insists Glasgow’s Scotland contingent will have no problem taking a combative approach when dealing with their World Cup colleagues in the Edinburgh line-up on Sunday.
Warriors - who travel to Murrayfield for the first leg of the 1872 Cup - sent 19 players to England 2015 as part of Vern Cotter’s group.
There they combined with the Gunners’ Al Dickinson, Ross Ford, WP Nel, John Hardie, Sam Hidalgo-Clyne and Matt Scott to help fire the Dark Blues to the quarter-finals.
The national squad spent three months together in the build-up to the tournament and were one controversial penalty-award away from beating Australia to a place in the semi-finals.
But two months on from their cruel exit at Twickenham, the international team-mates will now go head-to-head for inter-city bragging rights in part one of a festive double-header, with Guinness Pro12 points also at stake.
However, Seymour is not concerned about a conflict of interest with the start of the RBS 6 Nations just six weeks away.
“I won’t be calling them mates this week - that’s your word, not mine,” he said when quizzed about the emotions of facing up to his Scotland colleagues.
“We are used to spending large portions of time with these guys so we know each other well anyway.
“The World Cup was the longest and probably the most intense period we’ve spent with guys from the other clubs, including Edinburgh.
“So yeah we maybe know them a little better now but the guys are still looking forward to these fixtures and they will be heated affairs.
“There’s been enough time since the World Cup till now for, shall we say, different feelings to have subsided. I don’t think you’ll find anybody in these two camps who doesn’t relish these matches and what they stand for.
“Friendships are for after the game not for before and certainly not during it. There are a lot of great guys in their side but this week we will be concentrating on the fact they are good players and what we need to do to stop them playing.”