Hi Gonville, yep it's me from FB (y)
I've been driving cars with purely electric power steering for getting on for 20 years and not ever experienced this kind of behaviour with them - Mk5 Golf, Mk6 Golf, Mk7 Golf, Mk5 Polo, BMW 3 and 4 series, both RWD and 4WD and they all drive like 'normal'...