Wait for the preliminary report. There is a paucity of good aviation journalism in Australia. Most journos describe moving off the ramp as beginning take off. Questions raised from this incident are 1. Prop unfeathering at commencement of taxi would cause the strap to detach. 2. Why did the crew not notice the fuselage penetration immediately a/c commenced taxi.3. Which propellor was affected, the LH strap is attached to the boarding stairs for pax safety and removed before stair retraction.. 4. Did the crew elect for some reason to taxi asymmetric with RH prop feathered thus not noticing strap in situ.