Finally circling back on this and thought id share the results.
1. In a general sense works fine, but....
2. does vignette on my 135mm lens (not too bad though)
3. Does soften the image (know aspect of front element anamorphic)
4. Focusing is a massive pain in the

Below I am posting an un-stretched image out of camera, a stretched image (133.33%) and what the field of view would be without a anamorphic squish.

Out of camera:

4x5 Provia 100F

Stretched:

4x5 Provia 100F

Non-anamorphic field of view:

4x5 Provia 100F

Overall, I am pretty happy with the results, and may continue to explore this.