Is there a specific benefit to a second monitor for SupCom, or just the general benefit?
Have you seen the E3 video material of this game? 
No. But if it's (insert adjective implying "good") enough to warrant a second monitor, I might have to go shopping. Is it (insert adjective implying "good") enough?
[edit] I watched the video linked in the first post of this thread, but still didn't see anything about special abilities using a dual screen setup. Looks like you can use the general benefit (more on screen at once) but not something like.. one part of the battle field zoomed to one degree on one screen and your base operations on the other screen. *shrugs* [/edit]
[edit2]Making Zylon happy [/edit2]