Well, I don't know if there's a difference between the regular PT140 & the Mil Pro. Nate at UBG holsters might be able to help you out & he's probably priced pretty close to those production ones. He made his new IWB for my Mil Pro PT145, & it was beautiful.
Anyways his link is:
www.ubgholsters.com
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"Use human means as though divine ones didn't exist, and divine means as though there were no human ones." Baltasar Gracian
Integrated Close Combat
NRA Member
Glock 19, Kahr P45, Kel-Tec P-32, S&W 442, & Dan Wesson 14-2