Talking about using an upright on hard flooring reminded me of a Midsomer Murders episode I saw a while ago (this year) where the cleaner of a house was using a blue and white Hoover Senior and turned it on while it was on some varnished wood flooring. It was on the shag height setting but all the same, it wouldn't be all too hard for the suction to pull the brush roll towards the floor (as it often did on those Seniors due to the height adjustment using the rear wheels rather than the front ones) and ruin the wood.
Luckily she came across the dead body of the house owner quickly so no damage occurred!
