Cold storage is not possible with XCR.
lol

Why is that funny???
Cold storage has a risk of losing your coins if you lose the storage media. With XCR, your coins are always in the blockchain and can be accessed as long as you know the pass phrase.
Heard about the guy that threw away a notebook hard drive that contained 7500BTC? He can see them in the BTC blockchain, but until he finds his HD in the garbage dump under 6 feet of trash, he is SOL.