When I make profiles from DPReview studio shots, i crop the colorchecker to include the alignment marks, and scanin eats it every time…
Regarding command line, I too incorporate dcamprof in shell scripts, and I find that while the effort to develop such can be a bit tedious, the payoff in repeatability and subsequent time savings is enormous…
Regarding Lumariver, I don’t own it but I would in your case, @BSLprints. It’s one good example of purpose-built software that works well, according to second-hand anecdotal evidence. I’m a big FOSS user, but not above buying something that does a particular job well. Not photography-related, but I’m about to purchase a program called ConeLayout, $39US, that lays out cylindrical constructs with eccentric tapers, like motorcycle mufflers. I’m going to use it to lay out the tapered course of a locomotive boiler; it happily pukes .dxf files that the metal cutter I’m going to use accepts without hassle. IMHO a good expenditure of $39…