drilling for a clip

[gofastalot]

I am considering a couple of different Spyderco knives but I need the clip in the different location (left-hand carry, tip-up). Is it worth it (cost-wise) to have the clip holes drilled and tapped? The material would be either Stainless Steel or G10. Can anyone do it for me and how much will it cost? There is one model (the Rescue) that I can fall back on if the procedure is costly and/or not possible but I am probably looking at getting the Police in VG10 if possible. Thanks in advance if someone can do this.