It's around, but has never really felt popular to me. I guess it may be a little popular now, but isn't TOO high in the top 100 in most places, it appears... and if you choose a not so common mn or just one you feel comfortable using as a double name, that may help for back-up if there's a surge of Ians in your area. That said, for western combos, I have to admit I think the combo
Ian Christopher sounds really nice. I have it on my long list as
Ian Kyouhei (y is ALWAYS a consonant in Jpns., so it's a ky consonant cluster followed by a long o sound and then hay).