yey love threads like this,,,,, i use a frost/arcane spec for raiding when i fancy a change from fire and its rather good tbh,, your pet ads to dps so glyph for it and DEEP FREEZE gives awesome crits im a big fan of doing things different and i always get queries "your raiding in frost??" when i then deliver good dps the QQ stops
so YES you can raid in frost lol dont listen to some of the plebs who try n make you play your toon like generic robots,,, try it out
ill link my toon for you to check if you like