Yeah, juggling is important. The strength of that commander set up in my experience is being able to hurt the first chosen you attack, then capture another, preferably someone you can get a high exposure on, then capturing the original chosen before the extermination is done (even though that might mean not hurting the second chosen as much as you'd like), recapturing the second chosen the turn before the first one escapes and then finally recapturing the first chosen one turn before the second escapes.
With this tactic, 3 times surrounding the first chosen and 2 times the second, you can usually get the 3rd surround to last around 10 turns and get a good exposure multiplier, allowing you to break T2 vulnerabilities.