Is Gaelic Making A Comeback With Unionists?

There is some hope the revitalization of the language might bring with it sectarian reconciliation:

Few here have forgotten the Troubles, the brutal, bloody battle between the Protestant unionist and Catholic nationalist communities over the North's constitutional status, which caused what seemed like an irreconcilable schism and spanned almost 40 years, ending with the "Good Friday" Agreement in 1998.
Here, street signs are written in Gaelic and streetlights are topped off by Irish tricolors--a stark contrast with the Protestant region, Newtownards Road, which lies on the other side of the Strand. There, the block loyal to the Queen is accoutered with Union Jacks and vibrant murals that recount the days of the Ulster Freedom Fighters. The immediate overload of unionist imagery, painted in now-chipped bright reds and deep blues, is the Protestant response to the strong Catholic presence.
But on this same street is a budding movement to unite the two sides and tap into a shared heritage. Protestants and Catholics alike are reviving the Irish language--a piece of culture on the brink of extinction in Northern Ireland--in a move to depoliticize a tongue typically associated with the nationalist perspective and forge an identity that transcends religion.
"The Irish language has been used in a divisive way," says Linda Ervine, Irish development officer of the East Belfast Mission on Newtownards Road. "But to me, it has the potential to unite us."
Ervine, a Protestant who grew up in the area where the segregated religious communities meet, or the Interface, helped launch Irish language classes at the mission two years ago after she realized her own ancestors spoke Irish. Since 1985, the mission has served as a Protestant outpost that helps those who live in the inner city, regardless of background or faith.

I wouldn't count on this being a huge boon to cross-cultural understanding.  I would say the cruel fact of demographics will more likely bring about partnership.  At least eventually.