Scotland captain Chris Cusiter has enjoyed and endured the “rollercoaster” highs and lows of professional rugby in the last few years. But this weekend, when the Glasgow Warriors scrum-half wins his 45th cap, will be a high of Ben Nevis proportions – the first time he has led his country in a Test match.    Cusiter spoke at a news conference at Murrayfield today of his immense pride and how Saturday’s Bank of Scotland Corporate Autumn Test against Fiji (kick-off 2.30pm) would be a special day for his friends and family. Captaincy aside, Cusiter is also looking forward to starting his first international for Scotland since the 2007 Rugby World Cup against a team who he declares is spiced with players who are among the world’s best at beating an opponent, one-on-one. “Being a professional rugby player can be a rollercoaster experience.  It’s true that I have had injuries and there have been other occasions when I have been on the bench but, like any player when you’re given a chance, you have to take it and that will be my focus on Saturday,” he said.