I like knives. Stabby ones, cutty ones, even dull ones (for training).
The biggest compromise with the Matriarch/Civillian line is the apparent sacrifice of deep penetrating stabs. That said, so do most knives that are carried in a pocket or on the belt. While a 2-4" blade can fuck up someone's world when deployed properly, we also know that that's a short blade for really fucking up someone's day.
To be honest in deploying one of these S-shaped beasts - I'd opt for Forward Grip Edge In (FGEI) deployment with short hooking motions pulling back towards myself. Even those real short hooks would allow the point to get in and drive deep. This is the same basic technique that @
Totem Polar mentioned up-thread with a low-line inguinal entry drive up and pull back and cut someone's belt off from the inside. Same shot entering from the back side of the thoracic cavity could find all kinds of juicy stuff, like kidneys, stomach, bladder, lower portion of the lungs. If the arm is in the way you can get arm muscles and tendons. Or go low and rip through the buttocks or hamstring.
The slash out is not the technique I would probably plan to deploy regularly, because it's really a distance slash. Plus it comes in at roughly eye level. A FGEI orientation coming from the low line is the ticket.
Interesting to me...that's almost exactly my preference for how I deploy a P'Kal and Clinch Pick. And also of interest to me is, when you're grappling for a blade, I'll be damned if you don't often end up with the blade in LOW position where you can go back straight to those arc'ing motions, when you get your hand free.
Just my thoughts. I actually think I'll pick up a Matriarch, though I might get the non-waved version and put a pick pocket on it, because the factory wave looks a little acute in it's hooking angle and I've learned that's a recipe for failed deployment. You want a wave that's big and sticks up. And pick up one of those aluminum trainers too. Because I'm intrigued enough to want to see it all for myself.