The driver we are using is 1.2.0.27-4vmw.550.0.0.1331820, and have had no problems as far as I can tell.  We started off with 1.0e.1.1-1OEM.550.0.0.1391871 which is the driver listed on the HCL and had all sorts of problems.  It is my understanding that Intel is in the process of recertifying the P3700/P3600 with the updated firmware.

I've been told by VMware support that they will support these drives with this driver/firmware combination, so we have moved the cluster into production.  I would love to see the HCL warning go away soon though