Digital is NOT a good polaroid substitute! I have yet to see a digital camera whose ISO 100 is the same as a handheld flash meter's ISO 100. If you are ultimately making film exposures, then just learn your light meter and learn lighting ratios, which are easy enough. You can use the digital to proof the lighting ratios, but do not use it as a substitute meter!
Couldn't disagree more. Concur with Parker Smith. Usually use a DSLR and a Sekonic 558 for studio shoots. Maybe your film and processing are free. Mine aren't.