Its being developed and tested to work with Coino.  Nothing would stop it from working with the flavor of the week coin type as long as you added support to the back end system. 

Think of it as a different kind of exchange, the same steps that allow an exchange to add another coin type will allow another coin type on the machine. 

The reason Coino was picked to be first was simply about the transaction speed.  Waiting around ten or twenty minutes for bitcoin just doesn't work.  Thirty seconds isn't all that bad...

Even with a slow coin - you just have to decide if you are willing to trust a transaction to complete without waiting around for it.  For low value, maybe you do.  In the current design, most transactions are instant and only those that fall outside of the "trust rules" wait to be fully processed on the blockchain.