You have actually hit on a really neat and ridiculously simple solution.
FWIW I have a HX Stomp
If I only use six presets and only want to use up one footswitch ie don't want to scroll backwards with another foot switch I can just duplicate the same 6 presets through all remaining slots, and then scroll down through 6, then 1-6 again all the way to the end when it will cycle from number 1 again.
Very cool.
I try and avoid using the extra 2 foot switch option simply to make The HX a grab and go all in one solution.
Thanks again for all the replies