Never heard of Kap before, I find the use of APL symbols and left to right parsing very difficult to read, my brain immediately starts reading right to left when I see APL symbols. I think Kap kills a lot of the elegance of APL as well but maybe I will feel better about it after I get a bit further along in APL, just started learning it a couple weeks ago and at my level of APL, Kap is very confusing to read.
Interesting observation. The fundamental syntax of Kap is the same as APL. The imperative style is added on top, and isn't really the way you'd normally write code. The examples were written that way in order to make a point the the code can he as verbose as you want.
I often use the code from the standard library that renders array output as an example of real world Kap code that is written in what I would consider regular style.