I don't think it would happen in a showdown between Galactica and Pegasus.
And with the crew being as demented as they are on the Pegasus, they can't exactly be kept around, unless that's a plot element that the writers want to develop. but that seems like it would be too much work. It doesn't have to mesh with the old storyline, but to keep Pegasus around, would be a bit of a hurdle.
What I'm wondering is where Pegasus got their ammo and spares from if they were scheduled to go into the shipyards for repairs and refit. I would think they'd be using spares up at a faster pace if the ship was scheduled for service. I would also think that if they'd been doing hit and runs since the Cylon attacks, that they'd have exhausted their weapons. Even stopping by at an ammo dump would prove to be a chore. Galactica got lucky that they made it to Ragnar station, where the Cylons couldn't exactly follow them very easily.
Makes you think.
