The torch pictured in the MCAH edition is a BernzOmatic TS4000. Notice the red trigger. The TS8000, yellow trigger, has 30% faster soldering time than the TS4000. Obviously more heat is better for searing as well. See http://www.bernzomatic.com/item.html?id=15
The trigger makes it kitchen safe. When you let go of the torch it is off. Just torch away from anything flammable like your drapes.
The authors felt that MAP gas does not impart any fuel flavor so long as the flame is adjusted correctly. You want a blue cone, not orange.
As to food safe, humans have been cooking over an open hydrocarbon flame for millions of years. Yes wood has hydrocarbons.