I think the comparisons about taking off in CAVOK and not doing control checks whilst taxiing are not valid. When you have personnel working out of sight below the aircraft, you need to make damn sure they're NOT there anymore when you release the parking brake - there's a real chance you can hit something (unlike control checks on a taxiway or a CAVOK departure). One Engine Taxi Departure is fine - just be disciplined and don't rush it. If there's a chance it will be tight timewise - don't do it - simple!
If you're both "heads in" doing the afterstarts you can't easily see what's disappeared outside - did you see the tug+bar+man+pin or not?
At least one instance in the U.K. of a 737 taxiing with the tow bar attached but tug and man clear......how that happened is beyond me.......
I like a stress free day out and keep things straightforward. Chill out - slow down......
