Just my experience, but I used to have an alloy frame 3", I wouldn't carry another one. I traded it off awhile back and now carry a steel officer frame with 4" barrel and slide. A good belt and pancake holster and it's no harder to carry than the aluminum one was.
I am trying to keep the gun as light as possible that is why I want an alloy framed gun. I really like the alloy framed 1911's I have fired several, and they are more comfortable to carry, remember if it isn't comfortable it gets left home. I also have a really nice pancake holster, and a kydex-reinforced gun belt, and I still find the steel framed guns to be too heavy/cumbersome for my liking.
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