In the midst of a kitchen renovation, I wanted to oust the installed zip hydrotap as the gubbins took up a ridiculous amount of under sink room. We never used the cold water tap (swmbo still rocking carbon filtered jug) and the hot wasn't enough to make a cup of tea. I assume it is reasonably old tech now.
We opted for the quooker for the refit, with just the hot water. In a similar vain to yourself, it was after being duped into a brew at a friend's and told afterwards that no kettle was required.