I've used it before on different projects and find its a pain to get looking right, if you stretch it or bend it too tightly it deforms and ends up looking crap. My trick to tidying up engine bay wiring is bring it all up from underneath where possible and wrap it in a tape or heatshrink that is a similar colour to its surroundings, whether it be the block or engine bay colouring. . ..black seems to always work with anything!!