In table top, warlock slots are separate from other spell slots, but you can still use any spell slot to cast any type of spell you know. This is one reason why warlock + Paladin is a very popular power build.
Well, no hexblade here, and we don't know what pact of the blade looks like yet, so in order to do that multiclass is may have to be Warlock 3/ Paladin X, which is a huge pain with respect to getting the extra attack on time.
I’m still pretty bummed that they didn’t go with hexblade. I’ll live, but damn, I love that subclass.
Let's be honest with ourselves. Hexblade is the most broken dip in DnD. To the point where if you are building a martial charisma character, you are shooting yourself in the head by not taking at least a one level dip. I think it is better this way. If they add CHA for weapon attacks as an invocation for pact of the blade, it would feel much more balanced and appropriate.
On a side note, for lore reasons it is really weird for 95% of paladins and half the bards and sorcerers to all have pledged themselves to evil weapons from the shadowfell.
