Cases that mainly wraps around the back and towards the edges of the grips will certainly have some weight too them, but it is about how well the weight is distributed that makes a difference too. Again people don't have their hands on the Killswitch yet, but I can already see issues with it, but the price might be a little high but who knows. Also the Killswitch seems to have the same grip design from an Amazon case I tested recently, it wasn't super great but I cant say that will be the case. Here is the link showing the grips I'm talking about that I believe the Killswitch might have a similar design, again not sure until its final: https://www.amazon.com/Shock-Absorption-Anti-Scratch-Individuality-Accessories-nintendo-switch/dp/B09ZXBYD56