Thank you, gentlemen!
As bdial mentioned, I indeed expected the PME-45 to be notably heavier than the unmetered PM-45. Since that doesn't seem to be the case (emphasis on 'notably' - I expect the PME to be modestly heavier), I elected to go with the PME-45. I ordered one from Japan (the best copy I could find) and so it'll take a week or two to get to the States.
As for the sentiment to keep things simple, I couldn't agree more. As I've said before, using a fully manual camera makes you see light, in a way that more modern cameras never will. That said, I've yet to meet the photographer who doesn't utilize electronics and batteries somewhere in their process. And although I expect my two Sekonic incident meters will continue to get the yeoman's work with respect to confirming light and exposure, I can definitely think of scenarios where having the ability to quickly check an EV value on-camera would be very helpful.
Thanks again...