If your cutting tool is very sharp and your feed is very slow, you can get a pristine, shiny finish on ABW without any further effort. Ornamental turners rely on that property of ABW and machining approach because the contours they end up with are sometimes impossible to finish further. They never do any sanding or filling. However, if you're trying to turn by hand on a wood lathe, you may not be able to get that. I've also run into substandard ABW that doesn't turn well at all - it's porous, stringy, and will not finish well - so watch what you get. All the ABW I use and have is natural, unstabilized and un-degreased. I prefer the texture of it all natural.
Cheers,
Rich