I'd guess that running it straight (teeny tiny) splits is out of the question. You'd need a teeny tiny fire which would give a teeny tiny coal bed which might cause issues keeping splits firing. I'd think running it like you did -charcoal with some flavoring wood -would make the most sense.
but give it a shot- won't know until you try, right?
but give it a shot- won't know until you try, right?