I would recommend NOT reaching over the prop to remove a glow driver. I believe in positive habit transfer as a learning mechanism. This this negative habit (reaching over prop) may work for a 10 inch prop but if you start flying larger glow engines that use 16-18 inch props, you may, by habit, hurt yourself.

As soon as I start my engines, I move to the back of the airplane to remove glow drivers, check throttle response, and make adjustments as necessary.