should be enough.. but i think it does not hurt.
i have a galaxy nexus with cm11, when i use the cm updater there, it does everything automatic, even dalvik wipe. (i think you can see it when android is optimizing the apps during boot)
on the other hand (mi2) with cwm i can use the updater and it boots in CWM and let me decide which sys i want to update (somehow clear because of tdb), then it automatic installs the rom but stays in CWM and does not reboot.
In the end it doesn't hurt if i then press manually wipe cache&dalvik, even if it is already done by the automatic routine.
whatever, worst case it that it is buggy and you have to manually wipe cache and dalvik later, would be also not a big deal.