I have some stake in GVT. As many projects it does look promising. It's currently pumped due to being available on more exchanges and low market cap. Apparently a whale scooped up many coins when it was around 2$, so there "should" be a dump coming soon (100+% gain is plenty...). The issue is that its roadmap shows that these guys still need a year or so to release a truly working product, so there's plenty of time for growth, but also P&D. I do plan on buying more coins though.
One more thing is that availability is less than supply in market as bulk token are locked for a year