I'm using this for rolling out test environments and so far it works amazingly well. Wildcard DNS record to an ELB, and with just the one kube-lego pod + the one single ingress annotation i automatically get new environments provisioned in under 10 minutes including app bootstrap. As a recovering sysadmin (some fools now call me devops;) this is stuff i thought of being the holy grail 5 years ago.