Is there any evidence for combining surgery and XRT +/- ADT for treatment of localized high risk prostate cancer?  

Presumably, this is a question inquiring about planned post-operative RT. If so, surgery followed by adjuvant, post-operative radiation therapy (PORT) has been profiled extensively in several RCTs: EORTC 22911, SWOG 8794, ARO 96-02, FinnProstataX. The two more recent trials, ARO 96-02 and FinnProsta...