Its an attractive thing esp in regional colours, I don't mind it at all in Britain and in its proper context, it just seems to be a go-to, copy/paste design element now.
It doesn't matter so much in a cafe or pub but in an historical or museum setting it gives me the ick.
Irish railways had all their own distinctive heraldic coats of arms, modern era logos, advertising, typefaces...GSR & CIE Gaelic fonts. There's a deep well to draw on already.