No question Hatchbag.co.uk has the most tricked out cargo liner for the Evoque - but an upcoming roadtrip from Seattle to Napa with my Golden Retriever required me to find a quick fix solution. So tonight at REI, I found one. It's called the Kurgo Cargo Cape: http://www.rei.com/product/828739/kurgo-cargo-cap
Here are some pictures of it installed - the great thing about it is that it has strategically placed Velcro that really holds the backing against the back seats and there are straps that go around the head rests as well. They give you some spare Velcro as well to put your own touches on it. I'm really got I found this and it was only $60 USD compared to approx. $128 USD plus shipping from the UK for the Hatchbag. It's waterproof and looks and feels very durable! Of course it doesn't cover the right and left side panels but at least you get 80% coverage everywhere else.