Cut the pork into chunks that measure 2 to 3 inches long and 1 inch wide. Place them on a sheet pan and set in the freezer for about 30 minutes. (This will help firm them up to make slicing easier.)
While the pork is chilling, in a bowl, combine the lime juice, sugar, vinegar, shallot, jalapeño, chiles and fish sauce; whisk well to combine and dissolve the sugar. Pour ¼ cup canola oil over and set aside. Slice the stone fruit into ½-inch wedges.
Take the pork from the freezer and slice each chunk into thin planks. You should get 3 to 4 long thin slices per chunk. Place in a large bowl and season with salt and pepper. Add the stone fruit and chopped cilantro; toss again.
Prepare a charcoal or gas grill for high heat, making sure to clean the grates and lightly slick them with a kitchen rag or brush dipped in canola oil. Thread the pork and stone fruit onto the skewers and place on a baking sheet. (Thread each pork plank in wavelike fashion, pushing it through the skewer a couple of times.) Drizzle enough canola oil over the skewers to oil them lightly but thoroughly.
Grill the skewers until the pork is golden and lightly charred on all sides and the fruit is tender, turning occasionally, about 7 minutes total. Transfer to a serving platter. Whisk the fish sauce vinaigrette and pass it on the side. Serve with rice vermicelli, lettuce, cucumbers and/or cilantro.