i want to use OpenE with ESXi 5 and MPIO.

We have five ESXi 5 with two 1G NIC for ISCSI connected to a single HP 2910al Switch. From the Switch we want to go witch two 10G NIC to the Dual 10G Lan Interface of the OpenE Server.
10G from Switch to ESXi comes in one year...

If i setup both nics on opene with different ips it should be possible to use MPIO, or? with max. 2G for each ESX...

should i setup a virtual ip on opene or not? or is it best practise?