Safelights on all the time, I focus on the grain so safelight has no effect, I have tested with on and off with no difference. I can see the potential with a 20 to 30 min development of lith to want the lights off but how in the hell are you going to see the snatch point.

Also I have found because of lith printing I have learned to analyze my print in the developer and I feel comfortable making dodging and burning decisions looking in the tray , and turning on quickly to analyze density, then to the next print and adjustment.