“Don't even ask the Mashgiach for reshus to go; he'll just turn you down with his usual nusach about how your place is in the yeshiva." (Weiser)

"As someone a non-chassid who davens nusach sefard I have experianced a range of reactions by others, from mild condescension to being told straight out “you are not yotzei tefilla” can anybody please provide me with some clarity on this important issue?" (source)