Ketra Skylight

Client wanted to have this incorporated into Homeworks/Ketra system for the cycadean rhythm:

LIGHTGLASS™ Products Page | The Experience of Daylight in Any Space (lightglasslighting.com)

Talked him out of it; now we have to create the same thing with Ketra Lightbar. The designer has taken it upon herself to fabricate it but I think I'll have to help her since she is not a lighting designer. Any of you guys done something similar? Links to a recommended reflector/diffuser combo? Thinking of something like a 2x2 troffer fixture with 4 Ketra lightbars facing up or at 90 degree angle towards the reflector in order to avoid hot spotting. Problem will be the depth since one of the locations it is a concrete slab ceiling. Will involve my local rep's lighting specialist as well when we get to that stage.