There's no way I would planeside check my flight case. There is Security Sensitive Information in that case, and if it were to be lost I'm sure someone could make some trouble for you. Probably not, but still, it is a safer bet to just keep it in the cabin. Also I have expensive sunglasses, headset, and pricey flashlght in my case. THings tend to vaporize around the airport.

FYI the common ettiquette when nonrevving is to let everyone off first before you exit the cabin, unless you can do it quickly without slowing anyone down.