I made a pull request for OwlSim. It enables presets in the plugin, and also to retrieve the selected patch when opening the DAW session.
I tested it successfully with reaper, with either reaper presets or vst presets (fxp file).
Actually, there’s a problem loading a second preset. Don’t merge for now 
Ok, it’s fixed.
very cool! We’ll have a look at that asap.
Thanks a lot Blondinou!
the overdrive doesn’t work in the pedal, in the vst ok.