HIFU study for prostate cancer

UroToday – High Intensity Focused Ultrasound Therapy for Clinically Localized Prostate Cancer: Efficacy and Morbidity of the Minimally Invasive Procedure
I am not personally that impressed with HIFU from what I have been reading and from my research at Indiana.
This series shows a relatively high failure rate of almost 30% and over 30% of patients having trouble with erections even though 23% of patients needed re-treatment.
My other main concern is how patients will fo after failing and needing surgery, which will be more complicated and have more side effects than primary surgery.