What I can say is that I never heard it in speech in Donegal -- which doesn't prove anything but I mean, I think it's not common in speech nowadays, if it still exists.

However I saw the 1sg form (with -ad) in one or two traditional songs (ní chodlóchad go lá leat, in a song I forgot its title) and I saw it sometimes in traditional literature (Ó Grianna etc) in answers (ní rachad).

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Is fearr Gaeilg na Gaeltaċta ná Gaeilg ar biṫ eile
Agus is í Gaeilg Ġaoṫ Doḃair is binne

Connemara Irish also mostly uses them in yes/no answers.

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Múinteoir Gaeilge - Irish Teacher
My "specialty" is Connemara Irish, particularly Cois Fhairrge dialect, but I can also speak Ulster and Munster Irish with native-level pronunciation.
Is fearr Gaeilge ḃriste ná Béarla cliste, cinnte, aċ i ḃfad níos fearr aríst í Gaeilge ḃinn ḃeo na nGaeltaċtaí.
Gaeilge Chonnacht (GC), go háraid Gaeilge Chois Fhairrge (GCF), Gaeilic Uladh (GU), Gaelainn na Mumhan (GM), agus Gaeilge an Chaighdeáin Oifigiúil (CO).