I believe they would not be holding back as they would want to be as successful as they could, maybe to the point (but hopefully not) of not having to tour so much. It has to be a strain at times to always be on the road away from loved ones. I think they were beyond a hit over in Germany and in one of the interviews of JJ over there this past month, he says that he has plans to return sometime later this year.
I am not quite shure how the songs/musicians get promoted on the radio, this is why I have an incredibley hard time trying to figure out how and why you bout never hear them on mainstream stations. does this have something to do with their slow growth of popularity? I don't know.
they are begining to sell out more often I think. Imagine what an appearance on Letterman could do, it could catapult them right out there, but maybe they wouldn't want it that fast. No telling. I just know JJ is one of those guys that is probably not focused on $$$, but he is just living the dream and if it takes him to more popularity great, if not, his outlook would be great just the same. JJ is truly an inspiration of being happy with what one has and not always trying to think more is better.
I hope this somewhat answers your question.
nice signa tour by the way!
"In a heartbeat, all worlds are born
In a heartbeat, all worlds collide
♫ ♪ ♫ ♪ ♫ ♪
In a heartbeat, worlds are born
In a heartbeat, worlds collide"