T-Mobile Band 12 Testing?

Has anyone actually tested a Moto X Pure 2015 in a T-Mobile LTE Band 12 area to see if the phone actually has T-Mobile Band 12 disabled, and how the phone handles that if so?

The Motorola website still shows LTE Band 12, with the footnote that it varies by carrier. Compare this with the Moto G, which initially showed Band 12 and then suddenly Band 12 disappeared from the Motorola specs page without any explanation from Motorola.

TIA...