Yes you can get Die Cast Set Screw RMC/IMC connectors.
Here is one
company that makes them.
Why you would want to use one is another story.
In the larger sizes some set screw connectors are listed for RMC, IMC and EMT
I have not seen or heard of any that are weather proof.
That aside the service in the picture has a couple of violations that jump right out at ya.
230.28 and 344.42
This was brought up at another forum but I thought it was interesting.
Are threaded conduit couplings listed as raintight?