That's really close to what it is, yeah. A lot of people are using the old Necromunda rules to try to capture the flavor of an Inquisitor game, while being able to draw from the much more widely-supported range of 28mm models.
This thread can point you in the right direction, if you're curious.
http://www.dakkadakka.com/dakkaforum/posts/list/221028.page