[Perfectlap]

in my experience it takes these cars a good while before the temps are up to the "safe to drive hard" zone.
The Japanese in WWII had a sub that carried two or three Mitsubishi fighter planes. While under water they devised an oil warming system so that when the sub surfaced the planes' engines could be started immediately and take off. I often think of those planes when I see how long it takes for the temps to come up on the Boxster.

Also, the IMS is not really the main issue at stake when you're discussing how you should drive the car and what's best for the engine.