That's one reason I generally prefer handheld scrapers to powered sanding - wood is smoothed without the risk of losing crisp detail. Well sharpened...
My wicked point tool is not ground or used anything like the others you mentioned, closer to a simple 3-facet point tool but better at cutting clean...
I sand most concave surfaces by hand with fine paper after using curved hand scrapers to smooth. I can often start with 320, 400, or even 600 paper....