I've begun messing with DxO raw converter and I've found I like the image controls within it quite well, better than Lightroom's or Capture One's. BUT, it won't open Phase One raw files. I've found that opening in LR or C1 and immediately saving ("exporting") to a TIF results in a file DxO likes, but I don't think it's truly raw, linear data, anymore.
I'd like to hear from anyone with knowledge of what's been done to the pixels, and whether they will survive that sort of kidnapping.