I kinda have a read on TT over the years and I think Kuhn will make the roster even if Ripkowski makes it. Like I said I think Rip will take the 4th TE roster spot over Kennard Backman, who will make the practice squad.
Like I also stated Kuhn has been one of the top 5 blocking FBs in the league over the last 2 seasons. Rip might bring more power in his blocks but he'll also miss assignments as a rookie.