I did a D2 Benchmade at 15 deg./ side… it held up well, although the last time I checked it, under magnification, I could see some small chips. Didn’t seem to effect performance, but they were there. That’s why I thought you might want to try the 18 deg. first without the microbevel, it might perform well. (Not that I’m against microbevels… they’re great for cleaning up and putting the final edge on a knife.)
Any idea what angle they come at?
I usually say “match what’s there” as a starting point, because I’m hesitant to recommend an angle, especially on a knife I’m not personally familiar with… hate to see someone do a bunch of work on a knife, only to find out they don’t like it, or it doesn’t work well. It’s easy, especially with the WE, to use this as a starting point, then drop down a few degrees if you want, to see how it performs, without grinding away a bunch of metal.
Keep us posted!