So I've been wanting to convert a couple of my older Highlander minis to St. Florians, and stumbled upon a pretty easy way to do it using the IWM parts bin.
First, swap the arms for the Cyclops arms from the parts bin. Tack on an extra medium laser barrel to each arm from a Marauder. The torso weapons then use the PPCs from a Hatamoto. I haven't finished redoing the paint, but I'm happy so far with the results.
(And, yes, I know my painting skills leave something to be desired. Like painting skills.)
Arms on, extra weapons not so much:
Both sets of new weaponry added:
Semi-complete minis waiting for paint:
I would say that
@Luciora's take is more accurate overall, but I don't have @Luciora's modding powers.