Anyone who wants to dual-client can run this exe at the same time as DragonRO.exe from the RO folder. This one supports new custom items as well.

--> Dual-client exe

Does that one support hot keys saving?

All hotkeys work, even in DragonRO.exe, with an update of sakray.

Really? When was this update? Because I updated Saturday and they still did not work.

I say that because...

They didn't work for me. I tried multiple clients that saga sent to me, and they didn't save.
A while later, I updated sakray
Now they work.