The Greek-Australian Souvlaki is the sandwich as it took root in Australia, where Melbourne in particular holds one of the largest Greek populations outside Greece and the souvlaki shop is a fixture of the food landscape. The angle here is naming and scale. In the Australian usage, souvlaki commonly refers to the wrapped sandwich as a whole, whether the meat is spit-shaved gyros-style or grilled off skewers, and the local version is built big, hearty, and salad-forward in a way that reads as its own established style rather than a faithful copy.
The build follows the wrap order with Australian proportions. The meat, lamb and chicken both common alongside pork, is either shaved from a vertical spit or grilled and pulled from skewers, then laid on a soft pita that has been warmed and griddled until pliable. The dressing is where the Australian reading shows: it tends to be generous with salad, tomato, onion, sometimes lettuce or parsley, plus tzatziki and frequently a portion of chips folded inside, then rolled tight and wrapped. Because the style runs large and salad-heavy, the failure modes are about structure. Overload the wrap and it splits or goes shapeless; a pita that is not griddled soft enough cracks under the volume; watery tzatziki or undrained salad turns the bread to mush before it is half eaten. A good Greek-Australian souvlaki is substantial but disciplined: the meat warm and well-charred, the salad crisp and drained, the chips inside still holding some bite, the whole thing rolled tight enough to keep its shape through a big sandwich.
It shifts mostly by what fills it and by the spit-versus-skewer choice, and the grilled-skewer souvlaki and the spit-shaved gyros are distinct enough as preparations to deserve their own articles rather than being crowded in here. What stays constant in the Australian style is the combination of a broad use of the word souvlaki for the wrap itself and a build that is generous and salad-forward: warm charred meat, plenty of fresh filling, chips inside, rolled tight so the size does not defeat it.