Most importantly, Prov may interfere with recovery, so if recovery is part of your plan for cruising, it will not be ideal. I see though, that your question seems to be, will it protect gains while maintaining your normal sexual function without test? I beleve that it will help with sexual function, but I'm not so sure that it will also help with maintaining muscle or strength. Test is really the only comound that is going to cover all of your bases. At a low dose, test will truly work as HRT, maintaining normal function while keeping some strenth and size while not running heavier cycles. Deciding to do a blast/cruise, basically staying on gear for a year, will end up as not coming off again, for most people. So be very aware of the potential long term issues you can have because of this decision. Not wanting to pin 1 to 2 times seems like a minimal concern compared the long term health issues that can go along with staying on.
Make sure you get your labs done very 3 months.