Crystan, we had this pop up way waaaaaaaaaay back in the early pages of the thread (somewhere in the 30's or thereabouts). I think what Paolo is trying to say is similar to that solution, which uses both the IBL map and a teeny tiny mesh light pointed down at your model, scaled way down (really, make it almost invisible in scale) and the 'power' pumped way up to simulate the sun on the Reality light tab. You can parent it to a camera to get it where you want it then unparent before you call Reality.

 Voila, nice IBL mapping, and dark shadows like the sun. 

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