The main difference between the ProfiLux Outdoor and the "normal" ProfiLux is the IP54 housing and that the ProfiLux touch and some sockets are already built-in.
The measurement has the same precision, both systems have the same reliability and all parts have been chosen according to the same high standards.
So you can use a "normal" ProfiLux also very good for professional purposes.
Many of our professional customers already have a water-proof housing for the rest of their installation (like the example above) so I guess they just don't want to spend extra money for the Outdoor.
But we also have customers from science and research using the ProfiLux Outdoor, I am sure we will have soon some examples for that in our blog. The problem is that not all of our customers want to authorize us to publish details about their projects.