Originally Posted by
NoyGonnaDoIt
Interesting. No big deal for the pilots but sounds like a lot of extra work for local controllers, telling pilots who use the more common procedure to switch back to Ground.
Where it would bite the Local control hard is when a Cessna taxied up to the hold short line (from run-up) without calling ground, and they were IFR (and of course said nothing to Local like, "Cessna 123, holding short runway 26, IFR to Podunk".
The ground control only passed an IFR flight plan to Local when they called from the runup (unless it was a jet).
More than one got off the ground without an IFR release (transparent to the pilot; a serious operational error for the controllers involved).