Mck thumb rest - CAA MCK Thumb Rest

On first arrival of my mck conversion kit I was impressed how the front grip was so thought through. So thought through that they sold you back the thumb rests as an option. To me I feel as though the thumb rests are a must for the mck. Unfortunate they’re a separate item that has to be purchased separate. This feels like when Apple wanted to sell you back your headphone jack you felt you so rightfully deserved from the start.