If you're not great at otoing, your CVVC won't sound good.
Learning CVVC otoing can be a great step for understanding different oto styles (especially if you're interested in doing an English bank later on), but it's still fairly difficult to get right, especially on the first time. This can be pretty discouraging or frustrating to a less experienced user, even if the recording count is less overwhelming (source: me). While VCV has more recordings, it's a bit easier to have a less quality oto on the VCV and get away with it. Poor otoing on a CVVC will make it sound bad, at the very least on transitions.
While a CVVC ust is not difficult in theory, it can get frustrating if your bank itself isn't configured well or if you're not too familiar with the methods behind manually creating a CVVC ust. Or if autocvvc never seems to work properly for you aka me.
I always had troubles finding useful resources for CVVC in general. CVVC resources feel very scattered...it's a bit easier to find things for VCV.