Some years ago, I trusted the wrong "gunsmith" to put an adjustable sight on my 1911. When I finally had enough of the junk sight, I had a much better smith undertake a recovery operation. My new smith suggested a Wilson rear sight that required a higher front sight. After some discussion, a dovetail was cut and a blank front blade installed. The blade was first milled to a height expected, by my smith’s calculation and experience, to shoot low. A trip to the range sorted out windage and determined how low the initial height shot. My smith then milled the sight to its final height and finished the blade. I have been very happy with the results. The pistol was originally a plinker and went from safe to case to range bench and never saw a holster. Recently the 1911 has become my hiking gun and is in and out of a holster fairly frequently. I had left the rear of the front sight vertical to save some time and cost. The vertical blade presents a very good sight picture but is not kind to holsters. My smith easily removed the blade, installed it in a jig, and cut it to a more holster friendly ramp, and reinstalled it on my pistol. Zero was maintained. Talk to your smith, look at examples, and consider the effects of permanently modifying your slide, you may want to go to a dovetail.