Andy Keogh's second-half effort, presented to him thanks to a howler from goalkeeper Ross Worner, and Martyn Woolford's close-range strike ensured the Lions' name will be in the hat for Thursday's second-round draw.
And although disappointed to concede a late Luke Moore goal, Lomas insists the positive mentality that was on display bodes well for when they resume their Championship campaign this weekend.
"I am always pleased to win, that's what it is all about so there were a lot of positives to take but for a sloppy bit of defending on our part and maybe not being as clinical as we could have been with our chances," said Lomas.
"But I thought we passed the ball well, moved it about and created opportunities. I didn't think there was a real bad performance in the team but the little critical things like seeing the game out and making it so it's not so mad at the end need work.
"And also as well when we get chances like we did we have to take them and take a higher percentage of them.
"I thought the application of the lads to do what I wanted from them was good. We have got a bunch of motivated honest bunch of boys who will give it everything for the cause."
- Martyn Woolford
- Ross Worner
- Andy Keogh