This seems like a good, unblockable chipper/shredder.
Mine is, to be fair, just a chipper - so ok for reasonably woody clippings, but it just mushes up anything non-woody and the outflow is quite narrow, so it blocks quickly.
A dumpy bag of griselinia or privet (a lot of the hedges round here) goes through in short order, though, and once the mulch has sat for a few months, it goes great on the borders and beds!