The possibilities are endless. Initially, a lot will depend on which pairs get created and how easy the UI makes it to swap. It.moght be enough to create a pair between token X and SWAP.HIVE because it could be done transparently in two swaps via SWAP.HIVE if a direct pair doesn't exist.
Thanks for the witness vote, being a top Hive Engine witness provides me the funds to do neat things on Hive.