Roland seems like a decent person at first, and perhaps he is, when not conducting business with him. Simply put, he overrates/over values his abilities, changes his stories frequently, gets worked up like a little kid over disputes, and has always made very threatening statements if you try to pressure him to follow through on original promises.
I heard that he has a new career flying cameras in helicopters from colleagues of mine in the film industry, but already I've heard complaints of amateur behavior and a shoddy final product. This is my experience with him; he just overshoots, and the worst part of it is, he lack the mettle to admit when he was wrong or can't finish something.
Frankly, he is just a bad business person, and doesn't realize his limits, and you'll end up paying for sub-par work.