Gregor told glasgowwarriors.org: “The players put in a great effort in the second half which was very encouraging. We didn’t get the game right in the first-half, we gave Scarlets too much of the ball and we didn’t look after the ball when we were in possession.
“We scored two tries when they were down to 12 men at the end so it showed what we where doing was getting us close to the try line and that was very difficult considering we were playing into the wind.
"All credit to Scarlets, they played really well in the first half, we knew they would be a dangerous side and they took their chances well."
The head coach also praised the Warriors making their debuts for the club, including 18-year-old Scott Cummings.
He added: “There were a number of players who played their first game for the club and I thought they all put in tremendous efforts considering the circumstances.
"Scott (Cummings) in particular was excellent, he showed real confidence calling the line-out and the way he carried the ball and tackled I thought was superb.
“Then we had Robbie Fergusson who also made his debut after Rory Hughes got injured and I thought he looked confident in taking on the opposition's defence. It's great to expose a lot of these younger players to the level they should be playing at this season.”
Gregor will now turn his attention to the game against Connacht on Friday night that he admits that game will be another tough encounter.
He added: “We know Connacht will be a hard game when they come to Scotstoun, but we know that if we do our job properly and look after the ball we can get a good result.”