Can EMC PowerPath and RHEL 5.6 dm-mpio co-exist on same RHEL platform?

We have a RHEL 5.6 server connected to a VMAX with EMC PowerPath.  We need to zone this same server to an HP 3PAR P10000 V800, which uses the Linux native dm-mpio to manage multi-pathing.

Can PowerPath and dm-mpio coexist on the same Linux Server?  The PowerPath would manage the VMAX devices and the dm-mpio would manage the 3PAR LUNs.

I read in another Forum posting from "Conor" that PowerPath can coexist on the same Linux platform with "other multi-path software" if they each have their own HBAs.  Of course, I can't do that.  I need them to coexist with the same 2 HBAs zoned to both Arrays.

     Stuart