Yes, I meant to create Viewer specific hotkeys to move the files while you are reviewing them.
I understand your concerns. o) A dedicated tool has some big advantages like handling raw+jpg at the same time, reviewing decoded raw files directly, easy rating, reviewing images side by side or caching of folder contents.That said, switching away from DO for navigating the image "library" to one of the other tools to sort images raises new borders which does not really help to work more fluently.
Yep, unfortunately they all need time to get used to. Much time also goes into trying all the settings to speed up things or to get closer to the workflow you imagine. But as mentioned, it can be worth it since you get to know some tricks DO does not offer. I can fully understand if you like to stick to DO, the other tools also come with several disadvantages which I cannot deny. o)
Now that this issue has been fixed: Properties SETLABEL crashing DO - #5 by Leo I think it's really worth trying to apply sorting-labels directly from the Viewer. DO offers an icon overlay for the label applied in fullscreen, so you can sort for trash/keepers etc. at the same time and even see what your decision was. Sounds like a very neat way to me if you want it quick and lightweight.