Share 'Chipping sengWare'

We recently bought a little over a dozen 16oz Porcelain proGrade sengWare mugs from visions espresso to decide if they were the answer to our seemingly endless mug search (16oz well shaped mugs are hard to find!). But after 2 weeks of use, over half of the mugs are already chipped in multiple places around the rim. We don't seem to be extra hard on them, just normal cafe use and washing. Has an...