The Saints boss watched his side dispatch Irn-Bru First Division side Cowdenbeath 3-0 at Central Park, 16 days and four cancelled games after the match was originally scheduled.
Three second-half goals from David McCracken, Steven MacLean and Gregory Tade respectively secured an all-Clydesdale Bank Premier League meeting with St Mirren in the next round. The sides went in goalless at the half-time break and it pleased the Saints boss to avoid having another replay added to an already hectic fixture schedule.
"The tie was becoming a pain and the main thing was to get it out of the way." Lomas said after the match. "We didn't want a replay and then to have to play again in two days.
"That would mean our fixtures would be Saturday-Monday-Wednesday-Saturday-Wednesday-Saturday-Wednesday if that was the case so we're delighted to get through and just put it to bed.
"All credit to Cowdenbeath. We had a few hairy moments there on the counter-attack. It wasn't easy on the eye, but the most important thing is to be in the hat for the next round. The job was done."
McCracken stole in to open the scoring in the 54th minute and the Blue Brazil soon contrived to offer the Premier League side a second goal. MacLean obliged from the penalty spot when Thomas Flynn fouled Murray Davidson in the 76th minute, before Tade ensured the Saints' safe passage to Paisley with a close-range finish three minutes from time.
Cowdenbeath boss Colin Cameron echoed the comments of his opposite number, feeling that his side had given a good account of themselves and on another day it may have been them in the draw instead.
"It was the same story for us," Cameron reflected. "The last six games we've only scored one goal. We've created five or six good chances, their keeper has made some fine saves and we've had a couple just go past the post.
"For it to finish 3-0 is harsh on us. I'll take more positives than negatives out of tonight. Hopefully we can take something from this game and use it to our advantage on Saturday."