Here are my impressions so far.
I like it a lot! Installation is easy: Just snap it into your DualShock 4 while it's powered off. It fits snugly and feels very secure; no wiggle or give.
It adds a little bit of bulk and heft to the controller. It's a noticeable amount of additional weight, but not enough to be uncomfortable or anything like that.
It will potentially change your grip of the controller a little bit. For people that only keep your two index fingers up top for L1/L2/R1/R2, your middle fingers will fall naturally onto the back buttons. For people that keep both index and middle fingers up top for L1/L2/R1/R2 (this is how I grip), your ring fingers will fall naturally onto the back buttons.
The action for pressing the back buttons is more like moving whatever fingers you have on them outwards, not upwards (towards the top of the controller). The buttons are clicky and have a nice action and very short travel on them. They're resistant enough to prevent most accidental clicks I would think, but you will probably hit them accidentally for a bit while you learn how to use them.
Programming the buttons is easy and intuitive. Click the screen/circle on the back to show your current profile. Hold the button down to edit the current profile, then press the back buttons to cycle through the available assignments (you can also hold the back buttons down to scroll through the available assignments). Double-press to switch profiles; the devices supports up to 3 profiles.
One thing to keep in mind is that the left and right sides are swapped when looking at the back of the controller. Might seem obvious, but I originally set up my buttons backwards because I didn't think it through, and then noticed it immediately when I held the controller normally and pressed the back buttons. lol
These are all of the 16 available assignments (listed in the order they cycle on the device):
- Triangle, Circle, X (Cross), Square
- Up, Right, Down, Left on the d-pad
- L1, R1, L2, R2, L3, R3
- Options
- No assignment
As you can see, the Share button and Touchpad are not available. Also, no button combinations.
The main thing I've used this for so far is Horizon Zero Dawn, which I was almost done playing before I got the device. I set my back buttons to heal (Up on d-pad) on the left and dodge/roll (Circle) on the right, so I can perform those actions while in the middle of combat and without having to take my thumbs off the sticks. It works great! I feel like I have much more mobility and control, after I got past the first few awkward minutes of trying to remember they were there and basically learning how to use them. I can see these being very useful in any 3D action game and any shooters. I'm curious and excited to see what other applications I can find for it in other genres.
Overall, I like it a lot and I think the price is very reasonable to get this feature without needing to upgrade to a much more expensive "pro" controller. I got it at Walmart for $25 and it's totally worth it. I'm excited to see if this feature is built into the DualShock 5!