I recently purchased one.
They are on the pricier side, but the service I received was exceptional.
As I am located in Brisbane, Australia, I really wanted to make sure I got my set up right.
so far so good.
I am in the process of upgrading bits and pieces and this was part of the evolution.
I may tweak the set up a little, based on how the bag sits when wearing it.
I am yet to purchase the harness, so I may not need to.
The ease of access to mixer I/o is great.
Very happy so far.