Damn, that's really cool. If this could be done well enough it might help to justify taking Charge early.
EDIT: It's possible to do both in one trip, though obviously not while keeping your speed. Still, if optimized, and combined with placing the PB before going into the Gravity Statue, it should probably save a good chunk of time. Probably not enough to make Charge early clearly better, but it might make it a serious question again.
EDIT2:
This is a little more than 2 seconds faster than my old run, though the usual method might be improvable with wavebeam, so it could be less than that in the end. But if you take it as 2 seconds, then combined with the gains from the Croco shinespark and the bomb spread in the bubble room, that's about 3.5 seconds. Plus whatever amount of time the landing site wrap around could save, if any, and possibly being able to save in on a couple of super missiles, and potentially something undiscovered. It could be a pretty tough choice.