Trouble is........I’ve worked with a couple of FOB Irish gents, and if they do the accents for real then Americans would have to use subtitles, cause it took me about two years before I could understand anything those guys were saying..............
Perhaps they could lend their services to the military, much like the 'code talkers' of WW2 :-)
If you couldn't understand them then I doubt that the Iranians, the Russians or the North Koreans would be able to either :-)