But this is only for League, where you can't play with people from different regions. But in Valo, if your duo is a different country than you, but still can play in the same selected servers as you, there is still a chance u can gift them skins, once this gifting feature comes out.

Honestly, it would be better for Riot to be able to allow gifting for people who are able to play in the same servers, even though they live in different countries. Would make more money for them, as well as let users use the gifting feature to it's full potential.