Coming from the FDM world, having a printer running for an extended period with no filament can have a lot of negative effects.
What are the consequences, if any of running out of resin in the middle of a print? I would first guess none, since the model will just keep raising and lowering into nothing and soon it will just be doing it in air.
On the other hand, I could also imagine that the small amount of resin that is left would basically end up cured to the PDMS and be very difficult to remove, basically ruining the vat.
Main reason for the question is that it would be nice to use up smaller amounts of resin where I am not sure if I have enough but don’t mind risking it on a non-essential print. If there is no downside I’d definitely be inclined to do it.