Against Cobolion, yes, its a decent tech. But not against durant. Here are the reasons:
1) They WILL lost remover any and all rainbows you put down. With junk arms they can get more lost removers than you can have rainbows in your deck.
2) they WILL crushing hammer the 1-2 fire energy you manage to fit in your deck. And if you are running more than that, you probably have a fire deck anyway!
3) You have to fill up your bench with basics they're going to catcher. Each catcher puts you down 1 energy, or a switch. Unless you run 5 pokemon with free retreats. If they're babies, your going to get donked too often for it to be an effective deck. That leaves Mew, Yanma, Sneasel, and Manaphy. So basically you'd be running a mew or yanmega deck, which shouldn't have that much difficulty with durant anyway
4) So many people think (erroneously) its a decent tech that durant players have started teching dittos in their decks. Sure, you can try and catcher it, but keep in mind durant runs 4 revives.