First, think about what you just said and how it reflects on your handle.
You have asked a question that you need to work out with your sheath maker. Rely on his artistic knowledge. When you visit him wear the clothing that you will be carrying. Between the two of you work out the basics of the design. How it will be attached to your belt. The position and angle of carry. Retention. Then let him show you his concept(s). What is he comfortable with making? If you can't work something out shake hands and find another maker.This is something that few here have done. The Case Bowie is a large knife and IWB carry is unusual. You have asked a question that is difficult to answer,and is best left up to the knowledge of your sheath artist.
And if you want the thread locked, report it to a moderator. If it were me, I would either delete or revise your last post before the thread is locked.