ITA seems like a poor choice but the only obvious choice. I suppose ITA willing to do them a real deal to get some pax (and obviously there is precedent for QF with the limited KL partnerships).
Personally I am not convinced at all. Yeah get a few full flights for maybe a peak summer month, and I get this will be seasonal, but I just can't see it being viable for more than VFR traffic.
I can't see higher yielding pax giving up options like SQ or EK for this flight and so struggle to see how it might make real money (it's not LHR which has a very different demand dynamic,not to mention multiple connection options and strong OW hub).
Time will tell.