A question.

[CDNSushi]

Would questions and discussions about such things as "sporran-holsters" be kosher in that subforum?

Unfortunately, no. If you check out the Sticky in the new forum, you will find that (bold=mine):

What may not be posted.
1) Any discussion covered by Rule #11.
2) The posting, pictures, or discussion of any weapon without a historical precedence of association with a kilt.
3) Any modern weapon not issued to kilted military units.
4) Any weapon being used, or threatening to be used, to injure.
5) Any posting, pictures or discussion of hunting.
6) Any ‘trophy photos’ of animals.
7) Any photos or discussion of techniques, or kilt accessories for, ‘concealed carry’.

Therefore, unless I'm mistaken, a holster contained within a sporran would classify as concealed carry.