Let me play devil's advocate here.
Having read through all the threads I cannot see any conclusive and binding regulatory statement about ROC approaching a cleared level in RVSM airspace.
The closest thing said, following scallywag's link is ' ICAO IS DEVELOPING GUIDANCE ON REDUCING VERTICAL SPEED TO BELOW 1500FPM IN LAST 1000' BEFORE LEVEL OFF'.
Now, this to me does not seem like a mandatory requirement.
Personally, I don't see what the fuss is about , I would worry more in busy TMA's with a high rate of climb and descent. If there ever is going to be an accident, my bet is don't look for it in RVSM airspace where most of the airplane's energy is already spent . Typical ROC's are 2000fpm and less, and don't forget we have valid TCAS interrogation at those levels as well.
I say monitor your a/c at all times and even more in RVSM airspace.
Finally, Prayboy, you can hold your head high for asking this very valid question, the answer for which is still inconclusive.
I positively go along with you that there is so far no mandatory ROC or ROD in RVSM airspace, there are recommendations
Let the debate begin.........