Usually, no. But there have been cases where a DPL hasn't been found in some language, and the reader has gone back after a period of time and checked their own recording. It's rare, but not unprecedented.I know that this project is unique, but one does not usually approve one's own recording as Word Perfect PL OK.
I'm comfortable with that aspect of the PL'ing in this case. If the files are all OK in the Checker, then the only thing to be considered is the soloist's desire for an ear to check for any volume / quality fluctuations. If need be, I can run through them quickly myself for this.