Good point about the roundabout. Roundabouts inherently don't lend themselves to separate lanes for cylists and motorists. Washington County seems to favor the sidewalks for bicycles idea, but that leaves cyclists to the right of right turning vehicles, not good at all.
I take the lane in roundabouts, even in the larger ones north of Cornelius and Forest Grove that have signs directing cyclists up on the sidewalk. It will be interesting to see what the new Scholls Fy / River Rd roundabout looks like when it opens next month.