How does region/language locking work for Legacy of the Void?

If I buy a StarCraft 2: Legacy of the Void Battle.net key from a Russian shop, which says it's for "a Russian-language version, intended for activation in Russia", what are the restrictions exactly?

Does this mean that if I install an English-language version and log in with a battle.net account that has the Russian key it will not play?
Does it mean I need to have a Russian IP address when adding the key to my battle.net account?
Does it mean I need to have a Russian IP address whenever I'm playing the game?

I found this relevant question about Diablo 3, but the answers are conflicting and anyway things may be different for Legacy of the Void.

Best Answer

If you buy the cheap RU/CIS cd-key you CAN change the game region (i.e you can play on EU, NA and KR) but you can NOT change the Russian language of the game (i.e. all voices and text are in Russian).