Andrew, OK so now you have to come in favor of the LunaPro (LOL).
That's a cool thing to learn about printing; I would've never thought about using a light meter in the darkroom (ha!!). For better or for worse, I'm of the hybrid type: dev my own film, scan, and digital print, so this is another cool, but moot point for me.
Low light situations is a VERY interesting area for me as I do lot of, and love, (pre)dawn/(post)dusk/night photography (ref:http://www.flickr.com/search/?q=nigh...4%40N00&m=tags).
But so here's a question. You say EV0 is 1 min @ F8. But why meter at F8 when digital sensors have no reciprocity failures? What I always do is meter at whatever F-stop that will give me the maximum exposure time allowed (30 sec on 5Dmk2), and calculate reciprocity from there. As long as I'm shooting digital, that works perfectly. When I transfer those values over to film, I will whip out my exposure compensation app (really a FileMaker database) on my iPhone, select the film I'm using and the exposure time I got from the DSLR reading (plus reciprocity) and voila, I have the exposure time I need.
From my perspective, any advantage you may have from being able to read off very low light situations accurately is, if not nullified, kind of negated or overwhelmed by the idiosyncrasies of shooting film and having to deal with reciprocity failures and compensation values.
Incident metering is on the verge of persuading me.
Size, again, is not an issue. If I do decide to carry around a lightmeter, I'm still going to be carrying around a digital camera :-)
Again, I want to emphasize here that I have NOT made up my mind on this It's not one of THOSE threads, where I pretend to pose a question really with the aim to agitate, and/or to advocate my biased digital choices :-)