I have two Sugas, so I guess that qualifies me as one of the Suga fanatics. Since you ask for opinions, I like JW's design the best, and it could easily include jimping.
The blade of this knife has multiple curves on top and bottom. The handle is also nicely curved in all the proposed designs.
With all these curves, it seems to me that the straight spine in some of the designs is visually jarring, whereas JW's curved spine matches all the other parts of the knife. Also, the straight spine with the dropped blade tip makes it look like the knife is mainly good for chopping, but it's really too small for that.
I've seen some high-end folders in the expensive custom section of the Bladeforums Exchange that have shapes similar to JW's, and it would be great in a fixed blade made by HI kamis.
That's just my opinion. You should go with what appeals to you.