• Kinesis Advantage360 Professional
• Kensington SlimBlade Pro

Modifications:

• I remapped the Kinesis to Colemak layout, both in the firmware and by just swapping around the physical key caps. I do not necessarily mind the fact that the lighter home row keys are now out of place.
• I used a tiny dab of hot glue on each half of the Kinesis to add tactile homing bumps
• On the function layer of the Kinesis, I set the T, S, and R keys to left click, middle click, and right click (respectively). I do not use the buttons on the Kensington at all; I just make use of its trackball for pointing/scrolling, then click with the Kinesis
• I tented the Kensington using a double magnetic ring phone stand. I also placed a sheet of scrap metal under the desk mat to help keep the magnetic stand in place

I tend to have a very pointer-heavy workflow, so it is important to me to have an efficient pointing solution. Because of that, I do prefer my Svalboard with its integrated trackballs situated just millimeters away. But this is a sufficient secondary setup that has the bonus of being wireless.