Containerlab sparked a lot of interest in the network automation community in the past year. With its simple and intuitive topology definition format, it allowed network engineers to quickly spin up virtual labs to test their network automation code. But is it a one-size-fits-all solution? Can I throw away my GNS3 and EVE-NG instances? Will it chug my xxIE lab? What if I hate YAML? What if I want a UI? Can it scale? These and some other sharp-edged questions is what will focus on in this talk.