I ty directly to most everything I use, jigs, cranks, etc….
The only time I use a swivel is when I am concerned that there may be any twisting involved. (ie…spinner harnesses)
I feel I get better action from my crankbaits if I ty directly to the split ring rather than putting a snap on the bait. To me, the slight time lost in retying is very minut compared to not catching the fish I need to catch. (confidence wise! )
We have actually seen a difference in our catching rate in previous trips when compared side by side to 2-4 crankbaits that are run the same.