I'm against the trials scene getting as big as say bmx or mtb. I think I can say that every trials rider i've met has been a sound, down to earth person. Even the pros such as Ashton.
However, hanging around with my bmx mates, I've found a lot of the bmx riders can get quite 'up themselves.' I'm not saying that this is the case for all of them nor is it just in the bmx scene, It's just the bigger a sport gets the more 'tards become involved.