Hello bfm,
Give Blade-Tech a call (no email, they don't reply). It looks like they updated their web site and may not have put sheath supplies on yet. I just ordered some Concealex and chicago screws from them not too long ago. They have black Concealex in .060, .080, .093 and .125 thickness. If you don't get anywhere on the phone, ask for Victor, he's the Concealex man at Blade-Tech.
Take care,
Tom