Nope, you use CHR for both damage and attack rolls.
So they give Pact of Blade two invocations for free? O_o
Man, thats big.
No. Those were never invocations.
They were the combined features of the hexblade, probably the most op 1 level dip in the game
They've rolled that into the level 3 pact selection now, along the lines of WotC's new ideas.
Also tbh Wyll needed to be a hexblade with the whole Blade of Frontiers, but he was clearly a Fiend patron warlock. Something needed to give.