Jonathan,
Is there any way to create a sub-forum called "Tech Talk" or the like? Let them hash out any discussions and/or debates they have in that area.
It "seems" to me they are both intelligent individuals who might comply with requests to immediately move any discussions of this nature to another area.
I, for one, hardly post in this forum, but I read it several times a week. And I must admit I agree that the initial topic gets lost and thrown WAY off, thus newcomers get discouraged from posting.
Yes, it might move some pertinent information and/or contribution to another area. But, once the parties either A) agree to disagree or B) come to a resolution, they can cut/copy/paste the chosen answer in the original poster's thread.
Just my two cents.