Both my ideas were mentioned earlier in this thread, but I'm still going to reiterate them because they seem obvious to me:
- Work Sharp
- Coarser grits for the WE
Since you're not planning on finishing the edge on a powered sharpener, what's wrong with using the Ken Onion edition Work Sharp?
You can get an excellent edge from it if you want, but if all you're doing is establishing a bevel... just seems like a simple, fast and reasonably affordable solution. There's advantages to using a full-sized belt grinder, but you're not really going to realize them if you don't finish on it.
Secondly, you could just keep using the WE. If you're spending more than a couple minutes establishing your bevel - even on an abused knife - you just aren't starting out with a coarse-enough grit.
I like the sharpening videos from Outdoors55 on youtube. Watch him go from a deliberately flattened-edge to hair-whittling sharp in like 1.5 minutes free handing on a single diamond stone. Literal hair-whittling I mean - he'll show you with his microscope.
One of his overarching themes is that most people start out with too fine a grit to avoid "damaging" their knife, but that just makes for more work and room for error.