Dick Dale is also left-handed who first played his guitar upside down.
There have been a few lefty players that played left handed guitars, but strung up for a right handed player. Dick Dale, as you mentioned, is one. Albert King was another. Eric Gales just turns his (right handed) guitar over, so looks similar to Jimi in that respect, but Eric's guitar is strung up as a right handed instrument.
Once we've made sense of our world, we wanna go fuck up everybody else's because his or her truth doesn't match mine. But this is the problem. Truth is individual calculation. Which means because we all have different perspectives, there isn't one singular truth, is there?