Presumably that aerodynamic advantage is very significant, and even just looking at it briefly, you can see how it might be.
I'll be interested to see how it performs. I don't expect traction out of corners to be an issue. To me it looks like it would understeer till the cows come home. Those narrow tyres offer a tiny contact patch, but if the front weighs as little as they say then with no actual front wing, I'd be scared to death of a wider tyre if the track was wet. Keeping the front on the road looks like it would be tricky enough what ever the conditions.
Anyway it will be great to see this little insect-like thing on track with the traditional LMP cars.