His displays caught the eye of Scotland head coach Vern Cotter - though even Hidalgo-Clyne at his best is unlikely to wrestle away the number nine shirt from captain Greig Laidlaw in the coming weeks.
But the Iberian-born Scotsman, who featured at the 2012 World Junior Championship, is still intent on embracing his new international experience.
"I'm excited," said Hidaglo-Clyne, whose club have won back-to-back matches to kick-off their GUINNESS PRO12 campaign.
"I have never been to a World Cup before. I have only done the junior stuff, so I am trying to relate as much as I can to that and think what it's going to be like, but I don't really have a clue.
"It's been my lifelong dream to play for Scotland and be at World Cups.
"Being with the under-20s was just a taste of it. It was brilliant, I really enjoyed it and getting that experience and taking it on board. The hardest thing was the turnaround. Having four days between games is really tough on the body. You have a day off then you are pretty much back to the team run and you are ready to go again.
"It's about getting that balance because your legs are always feeling heavy, getting into the ice baths and doing your recovery.
"That's the big thing for youngsters, finding what works for them. The older guys have had years to figure that out. It's about how you can feel ready for that next game."
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