No. A separate version without rimlight will be too much work, especially considering the amount of changes that this addon has been going through lately and that are planned. I use rimlight for fake ambient reflections, since phong is mostly direct lighting only. I think it makes rough reflections look more complete.

version w/o rimlight? imo rimlight is a very non-pbr concept and i think it only fits the style in games like tf2

pretty cool