Lots of toe on that film, which I'd expect to cause overestimation of the film speed by normal (e.g. BF+0.1) methods of testing. It has a massive upsweep in the denser part of the HD curve, so your contrast may increase rapidly with a little more exposure. With careful exposure, you can place the upsweep exactly where you want it and get beautiful strong highlights while keeping lots of (flatter) shadow detail.