I am not talking about learning vim. Of course, that is a huge time investment and you have to make your own judgement if that is worth it (for me it absolutely was, but I was in University with few obligations and lots of time).
I am talking purely about going from a vim without IDE-like tooling to one including it. That can be done in an hour.
Still, IMO it can only be done in an hour if you've done it already... You need more time than that for finding the plugin candidates, evaluating them, installing the right plugins, then you need a test run where you lookup the key bindings, on vim it's not as easy to discover features as in a "GUI" IDE.
I am talking purely about going from a vim without IDE-like tooling to one including it. That can be done in an hour.