I currently own one, after losing my QKS Artillery and my cue.
If you want all around protection from any accidents, the front is obviously not hard protected. Also, because it saves so much material on padding with its compact design, I find it's a little annoying when you want to access the outside butts and shafts. I just checked and when you unzip and open up the hard side flap, it obstructs the shaft area. Pulling out the shafts will definitely brush against the inner portion of this flap area, as well as the zippers simply due to design. The butts will be slightly obstructed by the zipper design as well. Compared to the QKS I had, you just had to open it up, and it bends back for full range to just pull out the butts and shafts with minor contact to the case.
I think there are a lot of cons compared to the security and usability of traditional cases, but I'm personally invested in the pros of the case.
For me, the pros that I appreciate personally are that it's lighter. Since it has less padding, not hard all around, it makes it as light as possible. This is a worth it trade off for me as I don't expect to end up in an accident handling the case. The big pocket is great for me, because I might want to store a small book in there, or just allow room to hold anything like an umbrella or something, without having to carry another bag. I'm just the type of person to want to allocate only the things I need at a given time, so the big pocket allows me to be a little minimalist about it, by being flexible and not forcing me to carry another bag.
The strap goes along the wide side of the case, not the thin side like traditional cases I've seen. I think this is a huge con when I tried some traditional cases other people had, because with a hard case, having the strap on the hard side is kind of uncomfortable. It will make you stand up a little taller. But the pro of this same configuration is being able to carry cross chest. Sometimes, I get kind of tired/annoyed of carrying the case unbalanced on one side. Carrying it lopsided over one shoulder does not feel uncomfortable with the hard case. That was similar to my QKS, but the Predator strap is slightly more padded.
I just got the case, so I need to get acquainted with the big pocket area, but that's what I have to say about the cue storage area and the comfort-ability, which is a huge concern compared to traditional cases. I think if you don't care about the weight of a case, I would definitely suggest another case. But weight is a concern for me, so it's good for me for now.