From various sources I've picked up that the VC10 was deemed easier to fly than the 707. Students who had problems transferring to a large four-engined airliner were often assigned to the VC10 as that would prove a gentler introduction to large aircraft flight dynamics.
There is an account of an 'interesting' flight on my website here:
Fun and Games with Harold that gives an idea of some of its characteristics (not that much but it's interesting reading anyway).
I too would like to hear more views on this.