I have limited experience with Brutes, so I'm probably the wrong person to answer this, but I've played an Electric armor tank quite a bit lately, so I'll offer a basic assessment:
This combo should be quite good for dishing out damage. Fire is a high damage primary, and Electric Armor further helps damage by boosting your recharge, solving your Stamina problems with Power Sink, and adding a pbaoe. You should be able to deal high damage both single target and aoe without down time.
The challenge will be staying alive to kill what you're capable of killing. Electric Armor, as much as I love it, can be a little bit squishy for a Brute while leveling, and Fire adds damage, not mitigation. Some basic advice:
-- Try to keep oranges on hand for tough missions to boost you up near the resist cap.
-- Take power sink the moment it becomes available. Use it for mitigation as well as to solve Stamina issues.
-- Take Tough and Weave soon. Tough is basically mandatory for a resist-based Brute.
-- If you play it to 50 and spend tons of infamy on sets you can make a fantastic toon by layering a lot of defense over your resists and getting godly recharge to pump your damage.
Good luck!
Thanks Max, helped a lot. 
Hello everyone. This is my first real attempt at a Brute. I am now at level 17. I've found Fury to be my best friend, it is really awesome!
Has anyone played a Fire/Electric Brute before? Do you think this could be a strong player in PvE as well as PvP?
Do you have any tips?
Thanks