Unfortunately, no. The slide you cited makes it very clear that BCX5191 is a nucleoside, not a nucleotide. Such a design is obsolete (remember IDIX’s NM283?); I doubt that BCX5191 will make it into clinical trials.
It looks like Tibotec/Medavir are also working on a nucleoside inhibitor
Whether there's some unforeseen merit to the idea remains to be seen. Perhaps there's some IP licensing issues on HCV nucleotides which is moving the industry in this direction?