I've done the main timing belt without the tools and its alot quicker than fart arsing around with the tools. The rear belts though, do need the tools.
To do the main timing belt, strip it all down to access the belt then get someone on the front bulley with a ratchet. Turn the engine while cutting the belt along its length with a sharp stanley kinife, once you've gone all the way round, pull off the outer part of the belt, fit the new belt as far on as you can get it then cut the remaining part of the old belt off then push the new belt fully on. easy!!! And no **** arsing about timing it up which is a 3 man job and alot of swearing when trying to get the belt on.