Mass focus, then strength focus. The sort of volume you have to do during a volume specialization like PiP is not going to lend itself to strength performance. A more blended approach would require a reduction in volume. This is exactly what Texas Method does with its x5x5 day followed at the end of the work week by a max five, triple or single day. When doing x5x10 thrice weekly with escalating loads, dedicated strength days just aren't going to be that productive.
And somewhere in the darkness, the gambler he broke even.