I did a true DC for about 8 weeks, and have now adapted it to my personal "DC style" routine. It takes a little while to get used to only doing a single lift for each muscle, but now I really like it.
What I really like about DC training:
1) Focus on getting stronger every single workout
2) If you plateau on a current lift, drop it and switch to a new one (this really keeps gains coming)
3) Hitting each muscle twice as much
4) Only doing a single lift for a muscle on a given day (this seems strange at first, but if my intensity is high enough, that muscle will still be spent for the next 2-3 days. When I was doing 3-4 lifts per muscle, I really wasn't getting much out of the last 2 lifts because the muscle was so worked already.)
What I didn't like about DC training: Rest-Pause sets. They worked fine for some lifts, but I found on others (like DB presses) that the second and third segments of the RP set were pretty much worthless. For example, a typical RP set on DB bench would be 10-2-1. By the end I could barely hold the weight.
So for the past 6 weeks, I've dropped the RP sets. Instead, I do 2-3 hard sets (to failure) for each lift, which works much better for me personally.
It is a little hard to judge the gains I made on DC, since I've been cutting fat for most of the time... but I have continued to gain strength for the most part.