Actually, HDRI does have a certain appeal,........however, this can be faked with a high degree of accuracy in Bryce using image domes and light domes. Rendertimes can be prohibitive though and it can melt lesser powered machines into a lump or molten goo. Still, I like HDRI and use it in my work frequently, like I said it has a certain appeal and in C4D is relatively easy to use(see attached image). This image was done in C4D V8.1,........it took about 10 minutes to build the models and texture them and about 15 minutes to render on medium high settings. (Sorry for the sacreligeous non-Bryce content).

"Any club that would have me as a member is probably not worth joining" -Groucho Marx