I have a minute of insomnia, so…
4.1 The rules are a bit awkward, but they should work fine. They just add effectiveness to the BD that they don’t need, I think. But Charge successes=Strike successes for a Pow 0 or Pow 1 weapon at Add 2 with no VA.
4.2: Must be a specially made spiked chanfron and breastplate, iirc.
- 6s rerolled for an open-ended ability or due to fate expenditure are not rerolled when a call-on is called upon! They are not failed dice in the technical sense.