Most cryptocurrencies are push transactions, are there any that are push AND pull?

Thinking about future ubiquity of cryptocurrencies it's easy to see how a push transaction alone could cause a few problems.It makes recurring subscriptions difficult. Giving someone permission to pull from an address a few times or a certain amount would help with this.It makes sending to a not-in-use address more likely. Imagine sending $20 to a friend and it turns out they lost their private key to that address. Having to allow (or pull) a transaction after it has been pushed could keep these mistaken transactions from occurring.There are probably other ways that push alone is bad. So are there any coins or proposals that require both a push and a pull? Or allow the pusher to give pull permission? via /r/CryptoCurrency http://bit.ly/1KzUA3I