This really depends on what your production environment requires. LibreSSL is mostly API compatible with OpenSSL but removes FIPS and support for esoteric platforms. If your production environment requires Windows 3.1 or big endian amd64 then probably LibreSSL is not ready for your production environment. Seriously though some of us are already using LibreSSL in production without problems.
This really is a more complex question then it may seem. One of the reasons I haven't yet upgraded my production system is because I want to be able to keep my system up-to-date. Now, having to manually patch the FreeBSD source tree once a new upgrade lands is a bit of a pain. The point of the article is really about exploring where we are and where the FreeBSD community is headed.