The suit in the comics now IS composed from armour and other things. You can find it on wiki what it's made from.
I've said before, I don't think the grey suit looks good in real life, just like the black suit doesn't look good in the comics.
And we most certainly can't afford to have Batman's suit look 'silly' and hopes the lighting will somehow hide it!
Just give me the current look of the costume, which is good, in black.
I mean, I get accused of not being a true Batman fan when I say I don't think the grey costume will work in live action. Everybody more or less wants it just to be grey for comic accuracy, which is fine. But I think we can agree, if it didn't look good, didn't translate well, wether it was the colour or materials...none of us want Batman to look silly, just for the sake of being comic accurate?!
It's like what Stan Lee said, some things just don't translate from the comics into film, and things to compromise.
But who knows? Maybe with the right creative team, the grey suit will work for the film?
But from what I've seen from B89 to BB, it wouldn't of. But as I said, perhaps all it needs is the right creative team, differing from the likes of Burton, Shumacer and Nolan?