Gliding was popularised (pioneered?) by Venom and other 80s airgun tuning houses. At the time, most of their work was on HWs, hence the association between HWs and gliding.

You can button, glide or otherwise support both ends of most pistons, but it’s a lot easier to do well on actions with a central piston rod (HW, AA TX, etc) than those that engage the sear at the bottom.