Won a small store tourney with 2 Lancers in my list today. They actually performed very well, with the caveat that I went up against 3 non-squadron heavy fleets. First fleet had Shara/Tycho, 2nd had 6 TIEs, and 3rd had two gauntlets. In all cases my A-wings were able to handle the enemy squads and my Lancers were free to do their thing.
Rogue and speed 4 was actually really nice. They were more or less 2 guaranteed plinks against the most pressing target each turn. The ability to last/first with a squadron activation was also useful to dodge flak.
Biggest weakness was that if they did get flakked, they risked dying too quickly. In one game I had to pull them both out of the fight after a bad flak roll knocked them down to 2 hp. I wasn't willing to risk them taking another hit and giving up 15 points a piece.
Grit didn't come into play much. They were useful overall though. In each game they were a consistent source of bits of damage and when they do luck out and roll a hit/crit it puts a lot of pressure on your opponent. Without BCC though they are very capable of rolling blanks.