Wise 1911 shooters stay with full size pistols for the best in reliability and long term durability. Using steel slide and frame components allow for snug slide to frame fit and super slick operation that just can't be matched when running a steel slide on an alloy frame.
Some people have an issue with carrying a GM size steel 1911 due to the weight of the pistol. The weight of the pistol can be reduced by fluting and honeycombing at the correct locations on the inside and on the outside of the pistol. Combine this with a properly selected lightweight holster and belt combination and you have a very comfortable rig while retaining the positive points of a full size pistol.
Overall you get the benefits of a super smooth steel on steel operation, the reliability and durability of a five or six inch pistol, and the reduced weight that fluting and honeycombing provide. The shock buff modification is a good option to use when shooting high volumes of ammo with the lightened pistol.
The final lightening procedure appearance varies some from gun to gun due to the areas on each pistol which allow material to be removed.