I think the more lucrative idea would be to offer nickel Teflon and ion bond finishes. I would pay for that, but would never drop money on a tennifer process. I currently have to send my guns out of state for both of these finishes. My $0.02
seems like Tenifer is tuffer than ion bond. one is sprayed on and treated at 400f
vs 1000f for Tenifer immersed in salts.
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ion bond isnt a spray on finish, and I would rather my gun parts not see 1000+ degrees but thats just me
my Glock 17 uses Tenifer... vs my S&W 340PD uses Ion Bond DLC
Both are top notch.... Tenifer seems to be tougher
Are you seeing any finish wear on your S&W?
Another thing is that the small parts cant be finished with Ferritic nitrocarburizing where as the can with Ion Bond.
I gotta admit, if I'm spending that much, I'm gonna go with IonBond.