Possible to create Counterparty tx with Coinb.in?

Development 3rd Party
1

https://coinb.in/#newTransaction

Under options you can allow Null Data
Allow data to be sent within the transaction and stored in the blockchain by using OP_RETURN.
When using this option you may enter a hex string or address into the address field on the output tab.

Assuming you have a script to generate this hex string, Coinb.in can be used to create a counterparty transaction, right?

The outputs will then be

  1. The opreturn, amount 0
  2. Your address, current balance minus fee (and dust)
  3. If a send transaction, some dust to the destination
    ???