Great synopsis. It echoes what I do as well with my 758. Great system to use with great confidence on the ouput. I do use other metering techniques though for backlit subjects – I shoot a lot of sunrises and sunsets with water in the foreground and backlit water will fool the reflective meter because of the specular highlights. I also experimented with exposures (meaning I burnt 5 sheets of Velvia 50 doing this) in a controlled setting. I found that in long exposure situations, which is mostly the case with LF, the contrast goes up using normal development. I corrected that as part of the experiment by shooting Velvia 50 at ISO 40, or ISO 80 with Velvia 100F. Doing so reduces contrast nicely on exposures longer than a few seconds when compared to normal development and thus makes the slides easier to scan.
Talking about incident metering, I had the same issues – I ended up not trusting the white dome at all. Then I read an article by Phil Davis that explained the whole thing. In the article he explains why the Incident meter will consistently underexpose by 1 to 1-1/2 stops. Go to btzs.org, then to the articles and read the last one on the page: “Sensitometry Primer Part 5: The Incident System”