It was a welcome return to top form and full fitness for Morrison, who was ruled out of Scotland's Autumn internationals due to knee ligament damage suffered during Glasgow's 15-12 win over Leinster.
After impressing in last year's RBS 6 Nations and the summer tour to Argentina it was a blow to the amiable back to miss the November Tests.
Morrison is now back to his best though, and said: "My target was always to get back for the RBS 6 Nations. Now I just need to prove my worth to the selectors.
"Initially, the hardest thing for me was to slot back into the Glasgow team. In the few months I was out we started to play some exciting and adventurous rugby so it was just a case of taking my chances when they came.
"Such a significant win at the weekend does everyone in the Glasgow squad a favour in terms of national selection."