I remember reading, probably in one of the PomPress books, that DC did reshoots of Jeff and Stokes' fight. It didn't say what was reshot or why, but knowing DC, it was probably because the original footage wasn't violent and bloody enough.
Unfortunately, what's scripted to take place between VampRoger and Jeff is somewhat more interesting than how it plays in the film. Perhaps they were running out of time on the day the scene was shot. Or perhaps DC simply decided he didn't want to do it for as long as it's scripted. Who knows? But Roger/Louis got short shifted in a lot of scenes...