No need to run slapgrid, as it is run by cron every minute.
Also follows rule of least surprise.

But keep being verbose if it failed.

last command in script may fail, but it is not a problem.

Much easier to debug.

It's not a bug, it's a feature.

Sometimes we want a second disk even inside of VM.
Even weirder, maybe you want a vm inside of your vm (now possible with new KVM).

No need for endscript.

Only ask bridge question if it is not a VM.