I REALLY wish that Clocker would support (and document how to use) something besides Weave - weave is intolerably slow for anything that requires some kind of more serious throughput between nodes. It is very, very unfortunate Clocker doesn't document how to not use Weave (for example, simply use whatever is already in place) as the rest of Clocker rocks, and the seemingly hard dependency on Weave makes it un-deployable for serious production use.
I did pop into their IRc channel a few times with a question around this, but over the space of 3 days all activity on the IRC channel was tumbleweed and crickets..