Sent mine to Cajun for milling. Once received they called and asked if I wanted to make weight for Carry Optics...so I opted for the lightening cut in the top of the slide, a polymer guide rod, and additionally a raised front sight.
On the plus side, the milling and mounting appears beautifully done.
On the neutral side, I'm not sure that replacing the front sight was necessary given how low the Vortex Venom sits (I added it because the venom is so small I thought it would help me get the dot on target). I may put it back on to see for myself.
On the (barely) minus side, the polymer guide rod Cajun sold me is too short to reach into the slide hole and won't align without help; result being the slide will not rack. CGW and I are dealing with this and I expect they'll do the right thing.
3 weeks for to door, and three days of that was a shipping "oops".