There are a lot of people around here running round bars in beans. Any 70 or 8010 in these parts run round bars in beans with no problems what so ever. The concaves in the 8010 are not that hard to change so I would try them if I were you. That's the only way you're gonna know if they work for you. Different regions with different crops and climates take different combine settings.
We always change them out when going from corn to beans. You get a much cleaner sample. As mentioned already the concaves are very easy to change in the 10 and 20 series. 15-20 min by yourself under 10 min with a couple people.