Redlynne answered the Ice Armor part of the Ice/Ice question. I will try to answer the Ice Melee or the synergies of Ice Armor and Ice Melee.
What Ice Melee gives you with Ice Armor is the ability to control over a wide area. You have Ice Patch, Chilling Embrace, Freezing Touch and with the right use Frozen Aura. What that allows you to do is control multiple groups of mobs.
You can throw down the Ice Patch in one place and control a group and then move on to a another group use Chilling Embrace and then go to another group or single target and use FA or Freezing Touch. If you add stone epic powers such as Salt Crystals and Stalagmites then you can really own the place.
The difficulty in leveling Ice/Ice is Ice Melee. It is low damage so it takes a long time to mature as a melee power. Not until after you get Freezing Touch 6 slotted do you feel at home. Of course you get Ice Patch at 20 and that is great but being an Ice Patch scrapper will only carry you so far.
And if your really just set on Ice Melee. I hear the Shield and Ice Melee has decent AOE damage potential with Frost and Frozen Aura.
Good Luck with you Ice/Icer
Pez