Having never played with personas I'm guessing its not as easy as making say a human warrior zoning into fp and switching to an iksar warrior persona and bam i'm an iksar in fp.
Yes, it is that simple. When you switch to a different persona you stay in the zone you are currently located, which means if you are in Freeport you will stay there when you switch. However you are not able to create a persona with a class that has already been used so you would only have 1 warrior and if it was an Iskar your human would need to be a different race.
Actually, it can be that easy. I will warn you, however, to switch personas in a safe place. You don't want to be in the middle of "enemy" when you turn into an Iksar. Step 1 - make iksar. Step 2 - make race / class of a city like Freeport you want easy access to. Step 3 - Origin to Freeport using that persona race. Step 4 - Go to safe place, use persona to get back to Iksar Step 5 - Go be an evil lizard.
I assume in west fp you can stand by the cl zone line and do it with out guards around then run to the tunnel to bind.