Orkney Huscarls/Hird as Tribal?

[jwb14feb]

Army List including Vikings grade them as formed, yet the Orkney troops are classified as tribal.  While I understand the classification of Islemen as tribal, perhaps the possibility of being able to be upgraded to formed should be entertained: at least for the huscarls.
Cheers.

The potential classification of the Troops of the Isle of Mann is another interesting discusion.