More like against the thing LazyCat is talking about, which is free saving and loading, though checkpoints don't quite fit my taste either. That said, I'd still play a roguelike with checkpoints if it's any good.
Also, as long as you don't enforce the choice, (eg. you pick a mode at the start of a game and can't change it later) then the word "optional" makes no sense, as you can delete your save after death in any game, effectively making it permadeath.