I love button locks and picked the Brat up because it was a G10 integral... mostly because I didn't have anything like it.
Once I got in hand though I really started to fall in love with it. The Brat is super comfortable to hold... the milling on the back of the integral G10 handle both provides extra traction and "softens" the handle against the palm. (For lack of a better term.) I also love how high the jimping goes up the spine both from the standpoint of it fitting different hand sizes... and how much flexibility it gives you on finger and thumb placement during a variety of cuts. (As a fun bonus... the Brat also has its own unique acoustics thanks to its construction.)
Kizer you've done good here! Now please release more with a variety of blade shapes so I collect them as well. Love to see a sheepsfoot or wharncliffe at least! :)