Hey Geof -
Check out the thread "Wire Clip Conversion" over on the Spyderco Forum. There is a member there, "Guts," who has fabricated a very impressive deep carry option for his Goddard via 3d printing. I don't think he has a business or is selling the product or anything like that, but I'm pretty sure he's shared his 3d printing instructions somewhere.. I'm not really familiar with how all of that works, but people there may be able to point you in the right direction.. if that's a direction you're interested in..