That's a genius idea!Onwards with the Duvet debate! I always have a flat sheet under the duvet so the duvet cover is never next to the skin. That way you just wash and change the sheets every week but can go a bit longer with the duvet cover. Having a top sheet also helps for warm nights when you just want a thin layer over you. You just shove the duvet off and make do with the sheet.
I hate changing duvet covers but use the inside out corner/shake/done way
On topic, I can't stand watching Suranne Jones acting, something about her, not just her eyebrows. I'd rather change 10 duvet covers than her on TV.