Celtic have registered two wins from two since they were put out of the cup competition under controversial circumstances, scoring five goals and conceding just one in the process.
It’s been a positive response with the league the final competition for the club to focus on and Armstrong has been impressed.
“It is obviously something completely new to myself and Gary Mackay-Steven but I can't wait to get over the line and get my hands on it,” he said.
“Things move very quickly and it says a lot about the character in the team that we have come through it with six points out of six.”
Celtic have a solid lead over Aberdeen at the top of the table and the team have been playing with an extra added motivation in games, which has helped them to protect that.
A double is still a very positive achievement for Deila to achieve in his first season at the club and he needs to play on the excitement and expectation currently within his squad.
It could have been very easy for Celtic to fold and feel sorry for themselves after losing to Inverness, but Deila has grabbed the team by the scruff of the neck and has got them playing entertaining, but results driven football.
Next up for the Bhoys is a league game against Dundee this Friday before matches against Aberdeen, St Johnstone and Inverness.