TC, around here I've seen it all. Clean plain trucks, logoed trucks, and Sanford & Son looking rigs, and they all sell work. It's all about your knowledge and how you personally represent yourself. One time I stopped for a quick estimate and sold the job immediately. A good days pay, cut and leave, for a couple hours work. At the end of the estimate the client says to me "and no I don't." He points to my t-shirt, which was black and read in white letters " got weed?" Guess it's all about personality.