[4e] Opposed Rolls in Combat?

[Tequila Sunrise]

I've tried rolling for defenses before and I have to say, on my personal experience, it actually sped up combat. My group is always talking and not paying attention to anything until their turn comes up, and then they have to spend extra time figuring out what to do. When they were rolling dice all the time, even when it wasn't their turns, they kept into the game, paid closer attention, and things ran much faster. If both the DM and the player roll their dice at the same time, it doesn't actually take any extra time either.

Heh, that's an interesting way to keep everyone focussed. I'll keep that in mind the next time my players' attention wanders.