If i recall, 58 pattern canvas webbing was issued to some units right up till the mid to late 1990s. Not the finest of stuff to my mind, but an improvement on what came before it. It got massively heavy and shrunk when it got wet, and the 'large pack' that clipped to it via circa 300 buckles and straps was an abortion. Mine only became slightly more acceptable once the large and floppy 'kidney pouches' were replaced with three water bottle pouches, the poncho roll stuck on top of the water bottle pouches (when I couldn't get away with dispensing with it altogether), the whole lot held together with bungies to tighten it up and stop bounce when running, and the belt padded with an after market 'hippo pad'. Oh and the so called 'large pack' chinned off into the nearest dustbin and replaced by something larger and more fit for purpose.
Despite all of this, I heard that the main driver for the British army adopting the nylon PLCE webbing to replace it was nothing to do with comfort, and everything to do with the ease with which it could be decontaminated in an NBC (Nuclear Biological Chemical) environment .