Russian keyboard layout

Hi guys!

I am going to buy a MacBook Air and I would like to order it with Russian keyboard. But I also would like to keep English keys, i.e. two have to layouts in one keyboard as all Macs officially sold in Russia have (or used to). I refer to physical keys with engraved letters. Is that possible? If I choose "Russian keyboard" option, will I get the double letter keys English-Russian or it will have only Russian letters?

Thank you.