Zhentarim Ruffian/Tactics on a Paladin/Celestial (Pact of the Blade)

My current favorite build is a Paladin 1/Celestial Warlock X with a longsword and shield, Pact of the Blade, Lucky and Warcaster (among other abilities, or course.)

https://www.dndbeyond.com/characters/138128127

Recently though, I watched a new D4 video centered around the Zhentarim feats for a rogue. https://m.youtube.com/watch?v=-MHYKRdfGfk
I noticed Zhentarim Tactics could bump my Charisma like warcaster does. I would need to switch my weapons for a two-handed weapon (I presume a Maul) to still use warlock spells without warcaster, but I wonder if that is an option worth pursuing… or is this setup designed mostly for rogues who hit with just one attack whichever turn(s) they can?

Either way it’s a possibility that I am curious about and would appreciate your input on. Thank you.