There isn't much bandwaggoning happening. There are a lot of threads about Gulbis in GM, true, but they contain more surprise and disparagement than bandwaggoning. People have been burned by Gulbis before so they're very cautious now. Most posters say either "I hope he can keep it up" or "he gets hot once in a while, it won't last" or "he's so arrogant, he doesn't care about tennis, he better retire soon". Hardly anyone is saying "he's the next big thing for sure".
So many people suddenly his fan though, hyping him up to be the next big thing. Kinda annoying. I don't hate the guy but I refuse to follow what every one else is doing.