I used a glove for the first time in about 3 years the other day, to start an OS-1.60 for the first time, and it had a VERY sharp 18-6W APC on it. It kicked back the first flip and sliced through one of the leather "fingers" and actually got my skin a bit!!! DAMN those things are like a knife!!! The second time I started the engine it ran backwards the first three times it started, so I slapped it backwards and it fired right up. Amazing how dull the LE of a prop is

Every start since then, on that motor, a slap backwards and it ran fine.
Unless I'm using an APC prop (which means a glo engine), I barehand my gassers/glo motors, and if you slap the top of the blade on an APC, avoiding that really sharp TE, you can toss the glove away in that instance too. This holds true for 2 and 3-bladed props, on engines from 30cc's to 200cc's, and most any glo engine. Some glo engines just NEED an electric starter (like when it's 15 degrees out) I've never been "bit" the entire time I've been in modelling, except for ONE time, using a spring-starter to fire up a G-62. The ignition was even off, but the starter got me. I'll never start another engine that has one of those silly things on it.
Complacency is the biggest problem with props/engines/starting techniques. I don't get complacent.