donut,
Let me be precise:
If you are flying a true Cat A profile, 52 knots as Vtoss is an intrinsic part of that profile. If you are flying any other profile, 52 knots might not be right for you. The idea that operations for every operator can be compressed into one set of procedures is a myth borne by those who believe that flying is a simple thing, just follow the numbers!
If you look at any company's procedures, you will see a healthy dose of common sense, and long experience that helps fill in the blanks.
The rig procedures that you see in the typical operator's procedures do not assure OEI capability from a rig, I don't think. Few helos are capable of it from a purely power to weight perspective. Look at the stats, the problems we have are seldom engine failure, we as pilots are clever enough to make sure other things get us first. We worry about engine failure to allow us to keep from worrying about the real things that get us. If we actually worried about the real things, it might make us actually change the way we behave, and so fix them.
That would be a real awakening.