Thanks guys, appreciate the comments.
Dan,
The finishes are Eco-Flo water based products by Tandy. On one sheath I used a Gel Antique - Saddle Tan and the other I used All-In-One Acorn Brown. Applied with a dry cloth on damp leather and then wiped off the excess. After dry, I applied a liberal coat of Professional Finish Clear Gloss to seal and set the colour. Hand buffed with a clean cloth after. Finally a bit of Neatsfoot Oil to the inside of the sheath.