asterisk users - Jul 2008 - asterisk queues and database backend (clustered realtime)

If I define a queue like in:
http://www.voip-info.org/wiki/view/Asterisk+RealTime+Queue

but instead I define queue_table as a MySQL ndbcluster table shared between two
asterisk servers (both active and receiving calls), will the queue calls be
handled coherently (or a pgcluster table if you prefer)?

Eg. will fields such as "queue_thereare" behave correctly if accessed
simultaneously by two "clustered" Asterisk servers?

In other words, is anyone running successfully a setup such as:

PSTN                PSTN
 |                   |
Asterisk1           Asterisk2
 \                   /
  Clustered Realtime
    |          |
 SIP members  Queues

Is Asterisk (1.2 and 1.4) "ready" for "clustered realtime"?

Vieri