Well, it did it. It took some effort but it did it. Still need a better solution than relying on Rhino for conversion. But anyway, here's the fruit of the labor. 

Bryce imported it huge and in two parts (strings part and body part). So I haven't quite alligned each part together properly, which you can see an error in the lower cornor. No time right now to texture anything, so I just rushed a copper texture. No time to position the object for a good screen capture with just 1 texture. Will have fun with this later. But now, what to do with it? I'm not that great with Poser, nor do I have a bunch of Poser models and their outfits to put someone jam'n on it. A guitar flying in the air/clouds? It would be better on stage.. but anyway. 

The guitar model itself, I'm thinking of selling it, but not sure. But on that I would make it a freebie to those in this forum.