Prices are pretty similiar with others from my understanding. Have been using it since they introduced it, a few years now. Can't remember exactly. Switched over from using Avery, 3m and Oracal. Have had no failures using the matched laminates (clear). Forgot to mention that we only use the permanent clear glue version. I don't trust removable or repositionable grey glue versions of anything really, except cast.
Have also used it on a dozen flat sided box trucks and no failures. Some have been out on the road at least 4 years from what I can remember. Print/cut on the doors too.
I think I know the rep you mentioned Bly, known him for years if it's who I think it is. He came across as a bit shady even in full sun. Never dealt with him over the last few years, deal through another rep.