I've been noticing that a bunch of SAK models have both a smaller blade as well as the main one. This seems a little superfluous to me. I've been trying to find an SAK with scissors, and a corkscrew but all the ones I've found with this combo also have penblades. Is the other blade a different style, like sheepsfoot? Or is it just a small pen knife? Do you guys find this to be a useful feature?