Drop Planck v6 Hi-Pro with MT3 WoB keycaps. I used QMK to program the left spacebar to function as “lower” when held and the right spacebar to function as “raise” when held. Both work as spacebars when tapped. Keycaps all match their function on the base layer.
I’m tempted to cross-post in the Mix and match keycap sets thread because I needed to buy two sets of MT3 WoB to get the two 2U spacebars…