Good morning, Don......
When you mention "beads", I'm assuming you mean my detail grooves. The answer is yes, it does help there, but the Oneway bowl steady also works in any case when you're applying tools to wood.
Getting the "perfect cut" is an elusive prospect, and there are many elements in obtaining it. Having said that, I've found the Oneway bowl steady to help sometimes, and not in others. I have tested whether the cut is improved, with and without the OBS at the same time, using the same tools on the same bowls.....numerous times......every time I've run this experiment, everything the same, and using, or not using the OBS was the only variable. This proved to me that the OBS does work, but there are other times when it makes no difference in the cut. For me, I nearly always use the OBS as a matter of standardizing the process, and it's well worth having it, when it improves the cut. You never know if the OBS is going to improve the cut, or not.....but, there is not much effort in installing it.
^^^^^ Look again to what I have highlighted in bold above.....because it's very important to mentally embrace this concept. The OBS is helpful in some cases, and when it does help, absolutely everything else in the total equation MUST also be working positively towards the perfect cut. This total equation, when it's working for you, is a very difficult thing to achieve.....and there are times when the OBS does help to achieve it.
-o-