One time I was on Wraith Trap, running MG. I wasn't doing so good on health so I tried a different approach. I tried hiding in the path before the underpass leading to the forest. I was rocking the 'wounded puppy' playstyle pretending to be running away while the dome was down.
Support did the mistake of splitting up from the others to fight me. I pounced him six ways to Sunday, killed him, ate him and then did the same to everyone else. I am a 7 feet high monster that can lift boulders the size of semis, what makes you think I will not eat you if you are on your own ???
On another occasion, a Kala did the mistake of using a portal that I happened to be right on top of. Pounced her ass. The only thing that saved her was Assault shooting all the way from the relay on Orbital Drill.
Pouncing is a good way to save your abilities for later use but it works first and foremost as an immobilization tactic. If a hunter is on his own, MAKE SURE TO KEEP IT THAT WAY. Do not let him jetpack back to his group, that's what pounce is good for.