I'm one of of the sysdig creators. Sysdig is a pretty young project (we released it around a month ago), so I can't promise it will be flawless in a production environment. However, we've had many installations under several different environments, and during the month after the release we had extremely few crash reports, which we've worked to fix right away.

By 'crash reports' do you mean the kernel/host?

I mean overall, so that includes kernel crashes.

Kernelwise, the main thing to report is a couple of crashes on non-mainline kernels like openVZ.