Though I know it is noncanon, the absolute best Star Trek novel ever written,
The Final Reflection by John M Ford,
features the
Baton Rouge class ships near the end of the novel. And specifically says that they have the first model of the Federation transporter. (Doesn't the Spaceflight Chronology also say they have 'em?)
Can't wait to buy one or three of those kits!
-Leelan