The common sense say one SP review thread like there is only one MP thread. But I doubt the mods will take the time to merge both threads when there is an advanced search engine we can use to easely find reviews on a specific SP in both threads at the same time!
For those that want specific thread for incall, outcall, agency, independent, tatoo, no tatoo, etc... Why don't you just mention in your review and let the mods update the thread title to know the actual and pass SP name, agencies, status?