Even with totally cold, full on race pads you can still lock the wheels. Race pads have the same coefficient of friction cold as a set of generic semi-metallics, they just work even better when warm. When my pads are all warmed up, braking takes very little pedal effort, which is very covenient for heel and toeing downshifting while coming into a corner.
Pads like the EBC Red and the Porterfield R4-S work better with a little heat in them, but its not as dramatic, and they have much better cold grab than race pads or normal pads. The Reds go away pretty quickly with massive heat, the R4-S just fades gradually and predictibly.
The Greens have really really good cold grab, but they can't really hold up to any repeated stopping, two or three stops from 120 and they'll be noticebly faded.
The EBC Yellows are really cool because they have almost the same inital grab as EBC Greens, but they can take more heat than the Reds. I'm not even sure really why they even make the Reds anymore when the Yellows are better in every category.
Worrying about dust is for sissies