As for construction? Pretty simple! There’s a regular x-brace keyboard stand below, then I picked up one of these ‘thorn holder’ (?) dual laptop stands and made a few mods. Drilled holes into the base so that I could mount it securely to the plywood board under the keys, zipcut the support bars down to the depth of the tabletop units, slapped on all the foamie scratchguards that came with the stand, (cut the round ones so they sit against the front of the units instead of under the base), and voila! Love having the OT up in my face and keys down at playing height. Only downside is the vertical bar makes the AR knobs tricky to get at with the right hand. I could tilt it up more but I like the level surface for pad playing.
Working on my live set right now, it involves a bunch of guitar and I think this will make for a more for a more ‘transparent’ and interesting to watch setup than being hunched over a table.