Save two outputs in command-line, or custom name in "Output file node"

Hello everyone, there’s a problem I can’t solve. I’d be glad if the community can give me a hand.
I reported it here already, but no answers, so I’ll try my luck here on BA.

I often do renders over night with a batch file (win8) using command line interface, and I like to choose EXR format to have 32bit files ready for archive. I also like to have blender saving the jpg preview to have a quick view in OS filebrowser (plus in the jpeg i can save metadata, such as rendertime and samples number, used for later debug).
But then, due to my company workflow, I have to go back into Blender and manually export the EXRs into 16bits TIFF files. This is quite annoying and time consuming (let alone that I’m the only one that can do that, so the tiff have to wait 9am when i get to work).

The question is:

Is it possible to set 2 outputs (2 file formats) in the CLI?

if not:
I could turn on compositing and set a File Output node with desired format (TIFF in my case).
But now the problem is that the outputted file would be named “Image” and not as I set in the CLI.

So the 2nd quetion is:

Can the name of the Output file be changed to something dynamic (for example blend_file_name##) with drivers or python script? Notice that I already use a .py in the CLI to set some variables so I could add that easily (maybe…)

Hoping my questions were clearly exposed, Im looking forward for lots of replies with plenty of solutions :slight_smile: