I've done my first flight with Volanta on Vatsim a few days ago and I must say I really like it. It just integrates out of the box once you have installed the FG plugin within Volanta, no configuration needed FG-side. I was able to mass-import my previous flights (from my Excel logbook) into it, and now I have a worldmap with all my flights (over the last 10 years) on it. The coolest feature is the 3D-map, where you can actually see your altitude profile in 3D. Only now did I realise how gentle a climb/descent path is, even at a high vertical speed.
Here's the flight I did on Thursday:
KLM44G