i think the render also ''screens' reflections and specular . so i think it would e very similar.

it would be great if we could manipulate what is reflecting and what is not. or for example what lights are used on specific props.i would also like to have an option to turn of IDL on props. for example i have a window infront of my M4 head.i use it for reflections on the eyes. but i dont want it for IDL. i dont want it to generate light. but we can not do this.

for example raytraced shadows are just wrong for hair. WETA,ILM,PIXAR are not using raytraced shadows for their hair. it would kill their machines. they use deep shadows which are similar to shadow maps. in their software they can tell their software that the hair should use specific extra lights. and those lights dont have raytraced shadows.

imagine using shadow maps for hair. it looks better because it gives it a more softer look. and is faster.