As for concerns... The main developer is a concern. Hard to trust them to support the language well, with some of the... Well, tantrums. This isn't aimed at a personal attack. But it is very hard to describe their responses in another manner.
This [0] thread on HN covers some of all of the above.
But, probably also important to point out that V and its drama have had dang threaten to ban the topic altogether [1]. There's a lot of drama.
