They are constantly suboptimal if you have a setup for Korthia/SoD and you are outside Korthia/SoD and they are constantly suboptimal for Korthia/SoD if you have a setup for 5mans/solo.
As a result a player that has to min max (in the most minimal way: they don't have to be world-first): they require weakauras to constantly use the chisel to switch content!11