Here's the specific document dealing with whether a plane could land and takeoff on such a runway - and how the runway would be banked.
http://www.endlessrunway-project.eu/...ft-aspects.pdf
The key problem I see is in the landing. You would be landing on the inside of a bowl near just below the rim. If you ever went a little long or short on your approach, forget about it. You need to bank you plane as you clear the rim and then land exactly as you become tangent to you "center line". If you need to land a couple of hundred meters late, your choices are a go-around or trying to follow the curve and bank of the "center line".
Their document is very light on the problems of the approach to landing. But they do say that if you do it, the acceleration forces will not upset the passengers.
Yeeehaaa!