I just happened to use my minibits as a test wallet to pay the order.
Any lightning wallet can pay the Zeus ln invoice order.
The mint in Zeus is selected by the user.
Discussion
I think I understand. I am wondering if zeus (receiver side) and minibits (payment side) are pointed to the same mint as that would be an e-cash payment within the same mint, i.e. no transaction going over lightning. Vs, if they were different mints, then there would be a lightning transaction between the two mints. (If that makes sense).
That would be correct. That is exactly how cashu works.