This is one of those controversial subjects that pops up from time to time
Pro - It works
Con-
I have to have a Tomato or Grape at the Bench
Tomato juice is NOT a good mix with fresh carbon steel
I actually did a test out in the shop coming straight off the buffers and the razor passed easily (it would not pass any other test)
After the buffer test, I shelved the idea, plus I tend to eat any food that might be at my honing bench :)
But
If it is a for sure Go / NoGo test that works for you then use it by all means..