I use it. The trick is to walk as slow as possible while every other person runs toward each other and blows themselves up. After that, check to see if you hear any rockets. If you do, stop immediately! Look both ways and at your radar. If you see a skull and crossbones ahead of you and an X on your radar, retreat post haste. If you hear rockets and see that your teammate and enemy killed each other, continue but continue cautiously. If you don't hear rockets, proceed smoothly to the next available cover, and begin raining hell. If you timed it properly, you will still have heavy when another is about to spawn so you can assault the other team and take theirs or get killed, respawn, and run towards your own heavy and rinse, repeat, continue.