Pure-born Garleans, most definitely, for exactly the reason you mentioned. Having said that, like everything it seems the Garleans have developed a technological alternative to teleporting instead - they appear to make use of a magitek transporter gate that connects their crag-like Castri to a nearby landform (this is actually why Cape Westwind exists - it's the location of the transporter gate for Castrum Marinum that lies offshore on a rocky island in the Rhotano Strait, hence this was actually the true objective for the fight against Rhiatayn during Operation Archon.
We weren't just there to assassinate him and take him out of the equation, we were also there to destroy, or at least shut down, the transporter gate there in order to prevent Castrum Marinum sending troops through it into Thanalan to reinforce Castrum Meridanium - which we do by literally killing two birds with one stone - the death blow we land on Rhiatayn sends him flying backwards at the gate, the force of his weight impacting the delicate magitek device so severely as to effectively destroy it. The Gration's landing spot in Azys Lla has also apparently gained a similar gate, allowing the VIth to quickly evacuate troops onto the Delta Quadrant, establishing several rudimentary bases there.
Either way, it's clear the Garleans cannot use teleportation magic, instead they make use of magitek transporter gates which effectively serve the same purpose (albeit with a fixed departure and destination point).