How long do BioClear Veneers last/stain resistance?

Bioclear has been around for 11 years....is there anyone who has direct, long term experience with patients who have received Bioclear veneers who can tell me how stain resistant they are and how they hold up over time/the rate they stain/how long in comparison to traditional bonding and porcelain veneers? What about with smoking? Do they stain at the same rate as real teeth, are they more stain resistant than real teeth?