Nusach Ari (known as Nusach Sefard) doesn’t tolerate those who wear woolen
clothing.
The Yismach Moshe* writes , It’s unheard of, having a Shliach Tzibbur who wears woolen clothing in a Nusach Sefard (Nusach Ari) Shul.
*Shu”t Heishiv Moshe #7
See Shu”t Chasam Sofer O.Ch. 15
