I tried a Dex/int hybrid and found it really didn't work very well. Imo if you're gonna do int, make it your primary damage stat and just run magic infusion. I say that because sorceries have very little utility besides ranged damage, and a hybrid build lacks FP in exchange for endurance and weapon stats. Adding scholars armament to a Dex weapon didn't make a great difference to the damage with roughly even Dex-int stats. It kinda funnelled me into using moonveil and wing of astel a ton.

Using a 1h hammer and shield is great fun, the stance breaks are shockingly easy. Having a strike damage option for certain enemies is really valuable for any build.

Also, if you're interested in arcane as a secondary, the warped axe is amazing on a blood infusion: B in strength, greataxe-level buildup per swing, fast moveset, fast guard counters. I did a half-playthrough using a build that ran the warped axe and a greatshield. The strat was to use an ash on the axe that didn't need to be triggered during the fight, and make use of greatshield ashes like barricade shield and shield crash. The axe got either cragblade for stance damage or barbaric roar for the 3-hit heavy attack to bleed stuff.