I tried it once (formentor). The background graphics are very good. The rider physics was pretty weird though. The avatar seemed to lean into corners at the same point no matter how fast you were going. Also no way to upload to Strava which is where I generally keep everything.
Anyone else using RGT? I've had a couple of goes and quite like it (most of the time I use TR).
Upsides :
Downsides:
I quite like it though.