I want to learn Vim and tried several times (with vim modes form Intellij mainly) but failed under pressure to get actual things done. I see great potential and I know I have to sacrifice 1-2 month of productivity to get up to speed but I fail every time.
Definitely don't do that. A well-written IDE should never make one express movement in terms of text because source code is only serialized as text, but the unit of movement should always be symbols. I love vim dearly, and it is an outstanding text editor, but no one should be programming in it when a more intelligent editor exists for the language.
I have seen people trying to fight with the vim plugin in IJ and it has yet to end well