Bought an MX-18 for another device and have been using it with my Kemper with good results. No need for extra buttons as everything plus some fits on the first page.
16.93 inches x 9.06 inches x 3.54 inches
Page B has the looper with presets and effects.
Speaks with the Kemper so the performance Rigs are noted in the LCD and effects/stomps on/off status is shown.