I work in a branch of audio that is not overly technical (e.g., recording engineer) but still requires very keen listening skills. As a curious anecdote - that you are free to assume is fabricated - I lost touch with a friend for over twenty years as we both moved out of the city we were born in. One day, I was driving though a parking lot of a mall where I'm now living and had my window down. I heard someone say "it only has 20 000 clicks...". In less than a heartbeat, and with no remote expectation to run into the friend I lost touch with twenty years prior, in a city neither of us had had any connection with, and with just hearing five words, I did not think but rather knew it was him. I pulled my car around, drove back, and had a lovely chat about old times and his new truck.

With the qualification above, the timbre, tone, inflection, and character of the voice in the videos is very similar to JP's, so much so, a match cannot remotely be dismissed out of hand, especially when one takes into consideration the meager quantity of recording samples available to those doing comparisons. While a minor point can be made that the accent is stronger in the videos, this is what one would expect in context of the activity engaged in.