I’m not a big fan of extreme skiving (below 2.5oz) for the same reason I don’t like high SPI (higher than 9 spi). I’ve seen leather tear in both instances. I’m talking about single layer, not triple layer skived leather. My santalum shoes are skived to less than an ounce where the vamp meets the shaft. It’s triple stitched, but I’m still afraid that it will tear one day.