It seems to me that the concern is about driving the cells too hard, and I think that would be valid.
However, would it be that difficult to arrange a reflector(s), such that there reflections only hit the panels during the morning and evening hours when the panels are starving anyway?
I'm thinking of two reflectors that stand vertically, but offset from the panel a distance equal to their height.
-At midday, with the sun shining straight down, the reflected light will no impact the panels, resulting in no degradation.
-At 9am or 4pm, the light will be double (minus the portion lost in the mirror's efficiency)
Aluminum foil with door panel backing should be sufficient and cheap enough for a trial run. I just have to get this stupid monitoring software to work first.