Suzkat, Obviously, your friend is an accomplished engraver/carver who applied a number of classic designs (many found in Meek's book etc.) to what appears to be an early step wrist longrifle, w/o adhering to the basic architectural elements. You cited the effort as a possible beginning of a new school, and then mentioned the Shreckengosts style in the same vein. I agree that the Shreckengost style was out there far enough that you can recognize one from across the room. They also did some excellent engraving, BUT did they establish a Shreckengost school, not really! There was no widespread geographic area or number of contemporary gunmakers that adopted the Shreckengost style. The Shreckengost gunsmiths were unique and that is what the piece presented here is. I don't think you will see many people rushing to adopt large flat lock panels or razor sharp comb lines etc. etc. Next July submit the piece at Dixon's gunfair, and then read their critique sheet.
Ron