Here's a link to the part that shows Vergil fighting and eventually DT'ing. It's a few pages in though. You can also read the full manga here. This takes place in chapter 2 titled Vergil. Chapter 1 is Dante and shows his flashbacks to the same night from his perspective.
Before me things create were none, save things eternal, and eternal I endure. All hope abandon ye who enter here. Official Dark Emperor Mundus of the DmC board
The whole concept of Dante's Awakening was that he was awakening his own demon powers (meaning; he was now "fused" with Rebellion). They may play with that concept a bit and make him incompatible with the Rebellion, but willing to DT with other weapons or items.
Represent ABDC | Poreotix Currently Watching: www.youtube.com/user/DaijoubuQuest