As previously posted, I find it hard to believe that a type that has been in service with the operator for nearly a year and a half, flying on a route that gets 6 daily rotations with the type, needed to carry a flying spanner just to sign off the aircraft at the outstation.
I am frequently called out to assist one particuler airline that has been operating a modern type for nearly two years and they still carry a flying spanner to certify the log. Some airlines just don't like other people messing with their kit and also like to 'control' the certifier. (read into that what you will).