Gents -- that is, Billy and Tom, if you'd like to address your differences in "neutral territory", and out of the constraints of a comment section, I hereby invite each of you two work up a guest-blog entry for publication here. Comments open on each, o'course, and followups may be possible.

Would that be an acceptable venue and terms? (The only additional term is my constant one, that the conversation is civil, and kept to the issue -- not directed at individuals.)