The only difference between a standard oire-nomi and the shinogi profile is the triangular profile of the top of the chisel. But both have vertical sidewalls that are nearly identical. Some more information can be found
here. So pick the one that you like the looks of better.
As far as getting into the corner of dovetails with skinny pins, which is the usual reason people want a “dovetail” chisel, skewing a suitably narrow chisel, Japanese or otherwise, will be fine, even without the dovetail profile with the sharp corners.
https://lh3.googleusercontent.com/-z...0/IMG_3395.JPG