Very smart!
One more consideration. The swirlpot below the bottom of the tank allows one to run the tank to nearly empty, not to mention the 1 l of extra capacity it adds. This design will require a couple of litres left in the tank for the pump not to suck air.
On my 2l Zetec with factory ECU the fuel usage is ~8.5 l/100 km, meaning the range is below 300 km.
I took a pic of my swirlpot when the tank was out:
http://imgur.com/4eZ7pIh
Here you can see it stick out at the back, as you see it's not in harm's way:
