I almost always score everything, I find it useful to my cutting, I can get close (1/32nd* - 3/32's**) with my tools of choice (axes**, hand and chainsaws*) and then roll a grain off the layout line to then expose the layout as physical, something I can then lay my slick on to pare to a finished tolerance. or easily belly as green woodworking demands.
My choice in tooling is driven both by the layout I us, scribe & SLSR, (in both cases layout lines aren't necessarily ninty from face) and for health reasons. I work to avoid fine dust and the high pitched scream of certain tools - The two objectives happen to dovetail nicely, the tools which most efficienly follow a non-ninty line are the same ones which do not scream or pad the air with dust.
I rarely pick up a Circ-saw but when I do, I cut to the line, as I do with my hand saws, (never understood the staying away from the line thing) when I do it is most likely a 16, to drop cut a tenon which falls in a knotty section,
A good chainsaw is a too often overlooked tool, it can be used to cut to, or nearly to, a scored line and is an invaluable tool if it is seen as such, and an investment is made in teaching yourself and those you work with, to use it.
