Yes, it is true alot build them with adjustment in mind but if you do a google image search for "anti wrap bar", you'll find plenty that just use bushings at the axle end. I had planned on doing a heim on the upper mount as well to allow me some "fudge factor" when I was building it, but decided against it to save a few dollars and just took my time to get everything lined up just right.
As I have stated before, if I change anything with regards to the suspension or axle, I'm building a four link for the rear so the need for future adjustment of the antiwrap bar is a non issue in my case.