I have the older version of this jig and it works really well for half blind dovetails. I have yet to try it on through dovetails. They have made set up a bit simpler in the new version.
On my last set of drawers I made rabbeted dovetails. These were a nightmare to figure out since the instructions had the pictures transposed with another drawer front..
But once I figured out the error the drawers came out perfectly.
All in all I really like this jig and for the price its well worth it in my opinion.
I would like to learn how to make hand cut dovetails like the masters do but I don't have the energy to hand cut dozens of pieces.
Harbor Freight also has a jig that looks very similar to the Rockler. In fact thats how I learned about the mistake in the Rockler instructions. I downloaded the HF instructions and they were similar if not more detailed than the ones that came with my jig. HF had the right pictures for the instructions.
Anyway, at $109.00 if I didn't already have one I would buy it.
To answer your question, I have it, I really like it, and it performs very well.