No I've never gotten into the F-Stop timing thing. I knew Nocon who invented it and produced the first F-Stop timer. I never saw the point to it.
For me, it offers solutions to problems that linear counting either introduced, or simply couldn't resolve.
There really isn't that much need for so much precision in the darkroom I don't think. A tenth of a second either way won't matter at all
It's precise; no argument there. Moreover, I can absolutely see the difference in my prints before/after the adoption of f-stop timing, which is why I began using the method in the first place: my results are simply
better with that method because the exposures are more predictable, sensible and accurate. As far as
seeing that accuracy is concerned: I would say that a tenth-second gradation very much matters to me, especially depending on when it occurs. When I'm shooting test strips for highlights I can absolutely see a tenth; it's too coarse of an adjustment for the most delicate features, so I go down to the 1/24th increment on my timer and dial it in from there. Sometimes the step between one exposure and the next isn't incredibly visible, but at other times it's quite stark. Most of the time I find that I can round it to a 12th and be happy, but not always.
More importantly, there's the question of whether or not these kind of incremental differences can be seen in the finished print. My answer to that is "probably not in any conscious way, no...but they do have an impact." Over time, I've found that even a 24th can have a noticeable and visible difference when it impacts the relationships of the various tonal values in the print; that doesn't always happen, but it's also far from a rare occurrence.
Now, could someone else see that kind of difference in my work? Maybe, but I doubt it...but "someone else" isn't really who I'm printing for, in most cases.
I prefer a more organic approach. I just print by instinct but I've been doing it a long time. I kind of go by volume of light, imagining the tones rising off the paper. Everyone is different though, so do whatever works.
I hope that I can be that good, someday...but I don't think it'll happen: I don't have a good internal sense for what's correct and what isn't, so despite my frenetic habits I try to rely on math to help me do what I can't accomplish by instinct. But like you said: it's whatever works. As long as the prints are good and we're happy with what we're doing, that's really all that matters.