This is rarely a viable option. For this to be effective we would need to move between 2 specific points within a set interval (1min on live.) Unfortunately there are few fights where we can both accurately predict within 8 yards where we need to move and justify spending 2 casts on RoP. There is a point where casting RoP (and even Invocation for that matter) is not worthwhile because extra spells cast at the boss outweigh the 15% damage increase.
Taking a fight like Heroic Seigecrafter for example there are events which can cause you to move that occur more than once every 30 seconds, which puts you at an extreme disadvantage if you are using RoP. This wouldn't be an issue if other talents were viable, but for Arcane on live this is not the case. The issue is that if RoP ends up being that much stronger than the other talents in the tier we will be essentially forced into that situation.
That being said I doubt that RoP will be optimal in most cases. If I had to guess it will be tuned to yield slightly more damage with 100% uptime in scenarios with low or micro movement.