Yes the bristles do seem very firm but it still doesn't beat the carpet as well as I'd like.
Oh well, if I want beating, I can use my Hoovers I guess.
I'll probably use the Dyson as a daily driver and use one of my bagged units for the Sunday thorough deep clean.
That way I'm not putting excess wear and tare on my vintage units and my carpets will get a good enough clean to keep them decent during the week.