Heather honey can be extracted centrifugally provided it is a, mechanically agitated first to turn the jelly to liquid, and b, the extractor is tangential not radial. Having successfully done this with several tons I can assure you this is true.
OSR these days certainly in the midlandss is not a major crop as it is so early and lasts such a short time. In my case less than three weeks and the bees are no where near ready for supering. So these days I am more than happy to miss it totally.
In a suitably warm climate no doubt the device will work to a point. I am not at all sure about here in the UK.
PH