Should come as no particular surprise. The mfr-supplied tool, sold with full retail markup by RS, will allow any half-asleep person using these connectors day in day out to make a reliable connection with no judgment needed even when they're rcovering after a hard night out. For the careful and competent d-i-y'er, the improvised-from-available-tools solutions suggested make good economic sense. But it'd be idiocy for BT (say) to kit out engineers with pliers-with-temporary-closure-limiters taped to them: the cost of rework as the bodges-by-busy-engineers who hadn't noticed the bodge had fallen off would far outweigh any temporary savings on the linesman's toolkit. (Not that some penny-pinching moron in a muddle-mgmt position mightn't think it up as a cost-saving initiative, mind: *and* spend 10 times the immediate money saved on a Report on How To Do It in pretty-coloured report covers ;-)
Stefek