What's wrong with Vivis on it?
There is nothing wrong with vivis on it. They work fine - I've used them a lot. There are a lot of people who quite happily use Vision vivi novas. There are also a few people who don't like them. The OP asked if they work with this pv - yes, they work very well. The airflow is good, and they fit nicely on top.
There are a few people who are making a point of trying to talk people out of using them at the moment because they like something else. That isn't necessary. I use them a lot as I said, and I haven't found any flavor muting, have had no leaks, and by cleaning and dry burning the heads they last weeks. The main thing is to get the genuine Vision vivi novas, and clean and dry burn the heads. They are popular for a good reason.
Back on topic of this thread, the Vamo is a very good pv and a lot of people are using it right now.