erj 135...
Quote, '2 x CPL's = 1 x ATP?'
think you might be bit off with the above statement. ATP and CPL are different levels of academic/theoretical knowledge, however, i dont think there is any direct relationship on how good/safe/professional a pilot you are.
eg. ATPL holder with type rating on 1900, CPL holder with 1000 hours on type, who would you rather fly with?
but, i cannot see how operators would be openly breaking the law like some are implying, and if my memory serves me right, i believe nature link took the caa to court on this issue and won.