senti has historically been a role with the best aimers bar maybe duelist. Less, Alfajer, SUYGETSU, etc. Initiator and Controller are usually roles that you can get away with being slightly worse aimers, if your util and support is better.
Verno has 40 games on Chamber, 36 on Sage, 14 on Killjoy, 6 on Cypher. That's more than enough to shift to senti if needed.
But then again, it's far more likely that they just keep t0x