I think I found a Kali Shiva 2.0 contender for more oval heads.
I ordered a Kali Shiva 2.0 lg and wasn't too happy with the fit, though removing some trim pieces removed the hot spot on the forehead. I also ordered an XL and found the fit to be almost the same. I did some looking around for a comparable helmet that fits a more oval shaped head and found the Leatt GPX and ordered one to try side-by-side with the shiva.
The technology in both helmets is similar: Both have dual layer foam joined by cone shapes, with the softer layer near your head, both have a rotational impact absorbing soft foam against the helmet liner and your head. Kali calls theirs "low density layer" (LDL) and Leatt calls theirs "360° Turbine Technology." The different designs seem to achieve the same goal and the brands probably use the different designs due the techs being proprietary...
Both helmets are DOT certified, the same size, and the same weight! About 1300g for the large. The Leatt fits my oval head better, covers more of my forehead, and is a bit more comfy. It also has a channel in the chin guard for a hydration hose which is pretty convenient if I can put a weak link/joint in the hose.
The things I don't like: The "cool feature" of the Leatt is ventilation, which is the major difference between models 4.5 and 5.5. They have large vents in the back, which to me means less surface area of protection. The 4.5 has less ventilation, it's single vent per side is about the same size as Kali Shiva's three vents per side combined (meaning the Shiva might have better impact distribution and protection from punctures in those areas). The other drawback is the raised features on the back of the helmet (for keeping the elastic bands of goggles in place I think), the Kali Shiva is much smoother. I feel that the less smooth surface may make the rotational system more likely to be needed.
If anyone has tried the Kali Shiva or is thinking about it and has a more oval than round shaped head, the Leatt GPX seems to be a pretty comparable alternative. I'm leaning towards keeping the Leatt GPX because of its better fit and comfort on my head. The 4.5 is also cheaper than the non-carbon Shiva, and a carbon version (the 6.5) is also available.
Video review of the Leatt GPX 4.5
https://www.youtube.com/watch?v=0S5Uq-tx4tE
And the 5.5
https://www.youtube.com/watch?v=et-iG_52IHI
Published DOT test reports for the 4.5
https://www.leatt.com/product_uploads/h ... eports.pdf
Sorry about the direct comparisons between helmets. I'm still making the decision on which to use myself.