Episode 2:
I nearly stopped when the ninja that talked backwards started going, but he got killed pretty quickly, so I thought it was OK.
Then I stopped for reals when they were walking through the desert and they (or just Togame really) was talking about how the fella should have "personality" like the ninja from the first ep. Ugh. I had just enough strength to kill the episode before I turned comatose.

The chatty bits were cute in Bakemonogatari because you didn't know what direction the conversation or story was going. But Katanagatari explains the plot in such excruciating detail that it sucks all the fun out of watching it.