Having used these roundabouts in Overveen NL as a driver motorhome & trailer righthand drive and as a cyclist the only problem I see, is with people be it drivers or cyclist approaching too fast. Generally these roundabout cause traffic hold ups as the only safe speed to approach whether driver or cyclist is 10 mph to be able to stop safely.
I like most am guilty of approaching too fast on my electric bike and in the motorhome and had to brake hard.DVSA-ADI grade A.