Serial ATA, Write Caching and Soft-Updates

[Jason DiCioccio]

Greetings!
  I'm just asking this question mainly out of curiosity.  However, I know 
that Serial ATA drives can support 'native command queuing' (an improved 
version of tagged command queuing apparently).  As a result, are serial ATA 
drives safe to use in a soft-updates+write caching enabled setup?  Do they 
suffer from the same write caching issues that the PATA drives suffered 
from?

Thanks!
-JD-