Very true.
It's sorta difficult to believe anything Hollow Vergil says, since everything he did was to get Vergil to a specific point. But yeah, it was a random thought. Although, It could be something like when the classic amulets formed to make the Perfect Amulet? Vergil had (Hollow) Dante's amulet, but he also didn't have his own. They could easily pull something outta their butts about the two amulets being able to come together, but of course only if you have both.
Ah, that can even play into a DmC2, with Vergil stealing Dante's amulet for a similar process of combining them and...I dunno...opening a portal to Hell (as usual
), and the amulet gets combined halfway through the game, but Dante manages to take back the perfect amulet (it could be purple
), and Vergil could have no use for it for some reason, like...since he opened a Hell Gate, he's drawing power from it. So then Dante has the Perfect Amulet, and then needs to defeat Vergil and get a hold on the Yamato to close the gate, which would probably also mean a teary final battle that ends with Vergil being cast into Hell with the closing of the gate.
Dante could even have like...a "gimped" DT when his amulet is gone that makes his react much like the classics, where it only changes him and doesn't affect anything else, and the when he gets the Perfect Amulet, he gets his "quicksilver" back, as well as Doppelganger.