I actually have and asked him what his plans are a year ago. He said if and when inventory on old version dries up, he may go a different route / manufacturer entirely for the “USGT” labeled tire.

In any case, as you well know, the class is sadly disappearing / shifting into LMH and spec tire for that is Gravity slicks.

On the WestCoast they have launched RXGT, using HW FT21.5 with 15k rpm limit, Ride belted slicks as spec and body list true to the original RCGT