Drawing from an IWB holster from an open front concealment garment such as a vest or a light jacket, a "good" time for a draw to a single hit on an 8 inch plate is right around 1.5 seconds. If you're drawing to a smaller target, such as a 3x5 index card (my favorite new practice target) then your draw will necessarily be slower. I'm usually around 1.8ish seconds from concealment to an index card at 7 yards if I want to be sure of my hit.
Drawing to an open "Down Zero" zone on an IDPA target from concealment, I can keep pretty consistently around 1.2 to 1.3 seconds; if I want to get under one second from concealment I sacrifice a lot of sight picture and accuracy.
That being said, forget all of this "slow is smooth, smooth is fast" nonsense. Slow is slow. Fast is fast. There is a point to going slow. The point to going slow is to build up positive reps of a movement (such as a draw) and to give you the ability to analyze your drawstroke and eliminate wasted motion. Just practicing the "slow" motion doesn't make you fast. A runner who can run a 10 second hundred meter dash doesn't practice making a perfect 10 second run, he pushes his speed to make a 9.5 second run. The same is true about shooting. Once you've gone slow enough to master the mechanics of the movement, push yourself to go faster. You have to push yourself to the edge of your performance envelope - go so fast that you start dropping more shots than you're making.
When I'm practicing for pure speed on an 8 inch circle, my goal is hit at least 80% of my shots. If I'm hitting more than 80% I'm going too slow, and if I'm under that 80% margin then I'm going too fast.