To show both at the same time, you need to run an additional optional module for the infopanel called nUI: Dual Stats. You can get it here:
http://www.wowinterface.com/download...nfopanels.html
Another option is to give Skada a shot. It has all the benefits of Omen and Recount in one addon that seems to have a much smaller impact on performance. nUI will display it automagically in the InfoPanel without the need of a separate plugin.
Skada can be found here if you wish:
http://www.wowinterface.com/download...mageMeter.html