Yes, I'm not that hot. I usually just have the heater set on a temperature, and use the heaters until that is reached as they are faster.
I admit I thought the heated front shield would be a so-so gadget feature, but that has become one my favourites. I have never had to scrape ice off the front shield with this car. Wait two-three minutes and run vipers - perfectly comfy and lazy!
As a side note, if the weather is really cold crap and/ or bad rough conditions, I will put on some more clothes inside the car and then turn the temperature down a bit. That is just a little precaution in case of accidents: You might get stuck and it might take time before anyone comes around, so if crap happens at least it takes you a bit longer to freeze to death while waiting for rescue.