Yes, for practical purposes the Mechanic is the smallest with pliers. The Mechanic Jr is smaller, but basically impossible to find. The Wenger Journeyman is a wee bit smaller, but it is out of production also.The Wenger is only 85 mm vs the ViC Mechanic at 91mm. I have a Mechanic, carried it a long time, then switched to the Deluxe Tinker (with pliers) that I carry in a belt pouch.
You can still find the Wenger Journeyman occassionally on ebay, but I've never seen a Mechanic Jr.
Rich