I had a Missions character just slap a chair atop the turret of a Steel Lynx.
The Evo Orderly is an interesting story. The original idea was that the Orderly to be a humanoid drone capable of basic medical care on it's own, and the ability for doctors to remote rig the unit when needed allowing one doctor to service many locations. If you look at the description the text supports this. Before the Arsenal errata it was even listed as an anthroform.
The artist clearly did not get this information. What was drawn is a walking wheelchair. Would make it kinda difficult for the drone to perform it's stated job, servicing multiple patients.
When they did the errata, I guess it was decided to just go with the artwork and errata the text so the Orderly became a walker wheelchair.
-k