Thanks for all the advice folks,
merl, as I was reading down b4 your post I was thinking that I don't want to use my mitre saw for both wood and metal, and be switching blades back and forth. Also as you say, Im not sure how it'll hold up cutting metal when it wasn't intended for that.
Im thinking I'll keep the miter for wood as it was intended in the beginning on high by Mr. DeWalt!
Anyway Im thinking a multi cutter for metal, but why can't I use it for mild steel?