It is a common misconception that when an area is being heated using any form of radiant heating system, there is no benefit using destratification fans.
This is simply not true. It is true that the heat felt at ground level is not from the air around you being warm, and the warmth you are feeling does not cause stratification.
The stratification occurs up at the height of the radiant heaters themselves. The radiant tubes can run at anything from 700 – 2200 ᵒC, this then superheats the air around the tubes leading to stratification.