Maybe if you are using a whopping great rotor with the E4 then the inside position is workable.
But yeah. Weird.
OK. Not that weird. If you google image search the calipers it shows that either position is workable - you just pick the one that works for your frame geo / mount / and rotor size
You got the Barnoldswick intern and it was Friday?
Just checked my Hope, Shimano, Magura brakes - all banjos, all side mounted. Can't check the SRAM ones coz they are in the shop.
Would you like a photo?