I have ← ↑ ↓ → in a line on the four lower keys on the right of my ErgoDash. Not having the ⊥ arrangement took a little time to get used to.
I considered some fancy QMK (keyboard firmware) hacking to keep the inverted T, and have the key above ↓ change between Z and ↑ depending on the keypress before, but decided it wouldn't be practical. However, the Z is for Dvorak. A Qwerty layout, where it would be /, might cause less trouble.