On OES2 SP1 Linux

If I wish to make a new "native" linux partition (Reiser, not NSS or EVMS or LVM), what's the preferred method of doing this?

I've already created a vdisk on the Xiotech SAN, and the OES2 server sees the disk.

Do I use iMangler and go that route, or use the native partitioner in SLES?

Or does it matter?