Its more a case an no longer sterile glove you believe to be sterile is a dangerous thing. I wear a glove when doing self installs but use a known sterile glove oppend in field etc this i personal preference i dont see it as any better than properly cleaned and sanitised hands/arms.
I tend to wash hands and arms up to elbows then sanatize with an alchole based wash before putting on the glove / de capping the needle.