I've only just discovered the shoe, but am loving it.
I am a bit miffed at John during ep 20 season 6 though, Simon and Daisy had to go head to head stacking these bowl/cups things, when Daisy put her last one on he counted 3 2 1 with roughly a second between each number, about another second after he said 1, her stack fell and she had to start again! When Simon finished his stack John counted 3 2 1 really quickly and as soon as he'd said 1 he said simon is the winner of this challenge and Daisy has to go be on the jury.
I believe that on challenges like these head to head ones, he could at least use a stop watch so there is no disagreement about timings.