My experience comes from Scuba too. For me an extended disconnect is definitely not something I would ever do, but I'm talking about a disconnect here - no insulin at all. I don't see any problem with the Ping or, for that matter, the Omnipod that I use so long as the basal keeps being delivered (i.e. the pump isn't disconnected or turned off.)
On the other hand I can't disconnect for more than about 30 minutes without starting to see fairly bad BG highs after the disconnect. Insulet say that up to 60 minutes is OK with the Omnipod and, yes, I've done that (once) and it didn't kill me but it was just unpleasant (because of the temporary high BG) afterward.
YMMV; many diabetics who use pumps still produce insulin and removing the pump then isn't a big deal, it's just a matter of knowing what works for you.
If you have to disconnect for an extended period the basal can be replaced, or partially replaced, using long acting insulin. I have a Lantus prescription for precisely (and only) this purpose.