Children of Zug

[Yaztromo]

The Children of Zug are mentioned in DA4 The Duchy of Ten at page 41, as part of the description of Dost Suwat:

The Afridhi warrior Dost Suwat belongs to a secret society of Afridhi males called the Children of Zu,. According to their beliefs, the current worship of Zugzul in his Zul aspect ignores the dual nature of the god as both Zu! (ice) and Zul (fire). Further, the Children of Zug believe that the present Afridhi theology is at least partly the result of a conspiracy of the Sisters of Fire to keep male Afridhi subservient and to hide their god’s Zug aspect.
Since coming down from their chilly, isolated mountains, Afridhi males have seen several societies where females are subservient or, at best, equal. Many of them now believe that it is time for equality within their own tribe, and the most radical proponents of this belief are the Children of Zug. Since they cannot hope to have their heresy accepted by the Afridhi matriarchy, they seek to discredit the Sisters of Fire by wrecking their efforts to prosecute the war. As a faithful Child of Zug, Dost Suwat seeks to further this aim by doing what he can to sabotage the completion of the Well of Souls.

Have you ever found this trope used anywhere else in the Blackmoor canon (or fanon)?
Have you ever used the Children of Zug in your home Blackmoor campaigns?