There were 30 GTs completed since 2010 and if I'm not mistaken we have the following winners:
Froome, Contador, Nibali, Quintana, Evans, Wiggins, Hesjedal, Horner, Aru, Dumoulin, Thomas, Yates, Carapaz, Bernal and Roglic.
Only Quintana, Horner, Carapaz, Aru and to some extent Yates and Bernal are lacking in the TT department. We have exceptional TTers (Froome, Wiggins, Dumoulin, Roglic), very good (Contador, Thomas) and good ones (Nibali, Evans). I have no idea where to put Hesjedal.
Edit: Forgot about Cobo, nada TT skills for him.