"In my opinion I dont feel starting the engine on taxi to be the safest option anyway! Every airline I have worked for has insisted both sets of eyes monitor the start for safety sake, and dont feel this is possible during taxi."
Fully agree with REDWINGS on this one. Why not start before taxi? Those PT6s just sip fuel and the savings created by starting during taxi are negligible. Flew the machine for years and never had a company insist we start during taxi. Two pairs of eyes required for start and another two pairs required for taxi.
And if you did pull the wrong fuel lever, look at the bright side - at least it wasn't an airstart!