Andrew,

I've never done this integration but it doesn't sound too hard you just need to do a data mapping exercise to see what data is in it and how it can map to out of the box tables. Since it sounds like it's network gear you can start with that table and then sub classify based upon a type field provided by OneView. I suspect that there isn't too many people that have integrated with this tool before but honestly it should be easy enough to do. 

The only thing you will be missing by integrating this way is possible L2 relationships to servers but if they are super locked down then you probably wouldn't be able to get the information you need for that anyways so a CI import might be the way to go here. Hope this helps.