They’re both old fashioned.
I discovered this when receiving my first Google Adsense check from Google’s bank in Germany. This sort of intra-EU payment might have been “cutting edge” a century ago. Nowadays it’s just odd and annoying, because I have to leave the office during the very restricted opening hours of my bank to cash the check, which costs me €15 in fees (or about a week of Adsense revenue). Someone at Google should look up Regulation (EC) No 2560/2001.
It’s not just Luxembourg, though, it appears Google doesn’t like smaller Eurozone countries and Greece (bad vacation experiences, maybe?):