what makes this an IWC? assuming you're serious...
...then the literal answer is that the watch is made by IWC. Just like your beloved St Ex Chrono, with its ETA-Valjoux movement, is made by IWC. Just like the small Portugieser, with its JLC base movement is made by IWC. Just like the really nice Mark XII is made by IWC, and probably at least three hundred other IWC models. It was designed, assembled, and produced by a factory in Schaffhausen.
In fact, I would argue that a JLC base is more "family" than all those ETAs's out there, although I have no problem with ETAs in lower-priced IWC watches or in specially elaborated ones. Also IWC has used this base movement before in a few models.
But regardless your question is answered by the dozens upon dozens of watches most collectors have accepted for decades as IWCs, and none of them call them IWC-Swatches or IWC-ETAs or IWC-JLCs, let alone Huber-JLCs (I assume you weren't being snide by calling it a "Urania-Huber JLC" ).
IWC assembles and finishes the movements to its specifications, but buys the movements elsewhere. It is only in the past few years that IWC has produced most of its wristwatch movements itself, at least since the late 1980s.
Regards,
Michael
P.S. I just was checking and found another one with an asking price of under 4000 Euros. So much for too expensive in my book...