I defiantly agree you should be limiting your time with the clutch in and your foot on the clutch. If you are stopped even for small amounts of time you should pop it into neutral and use the brake. Then when starting up again clutch in and quickly put it back in first.
Also don't use the handbrake as the guy from the UK suggest, just keep your foot on the brake as that is the most efficient and strong hold for the vehicle on hills, in traffic, traveling at any miles per hour.
Less time the clutch is engaged... the less wear