Thing is even with a $4500 gearbox no one replaces it when the clutch goes tits up. Also you don't replace it when you trash the synchros you just open the box & replace the worn parts.
Same would hold true with the DCT just replace what is worn out. I don’t use launch control as a matter of driving style not any concern about the DCT itself failing. Looking forward to what BuraQ's experience is when he rebuilds the clutches.
Not that there is a direct correlation, just food for thought, but I just finished rebuilding the clutch, transmission, transfer case & drive shafts on my Ranger 4X4 & IIRC have less the $600 in parts + my free labor.