Rust Triangle Airlock Door Placement

[Political_Pie]

Watching videos, I notice people use triangle airlocks. This all makes sense to me, because the outer door when open will block the second entrance into a base. However, I notice something else as well. In videos, people often have the interior door facing inwards. There doesn't seem to be a significant difference between the door facing inwards or out, but since it's facing the wrong way wouldn't it be showing the soft side if the raid and get through the outer door? I assume this is just a vestige from a time when there were no triangle foundations or something; or am I missing something?