It turned out well. I ended up doing a 2.5 gallon batch and used one can of Oregon brand raspberries and just racked on top of it. It was definitely noticeable but it wasn't overpowering. Next time I'll use a little bit more and use fresh puree instead.
I failed to collect cocao nibs and ended up using some dark chocolate (80% cocoa). So the chocolate flavor could have been more. All in all I think the base beer tasted better than it did with the choc and razz. But had I had a more prominent chocolate flavor it would have been tastier.
So if you do something like this I recommend fresh razz and cocoa nibs. Since the raspberry comes through pretty well, having a strong chocolate flavor would help balance it out.