Just my two cents, I run no sway bars front or rear and I also daily my truck, doing a lot of highway miles when not on the trail. I also ran this setup in my FJ Cruiser.
You can definitely feel the body roll with both removed, particularly in tighter turns/corners and especially when taking highway on/off ramps with a bit of speed
but other than those instances I don't really notice it when driving the majority of the time, you get use to the new characteristics of this setup pretty quickly and if you drive slow and steady like I do most of the time its not really a problem. I've definitely had to preform a quick evasive maneuver or two since deleting them but it wasn't an issue.
In my option putting the sway bar on and off is not really worth the effort, I would imagine snaking it in and out of position would kind of be a pain in the ass to do if you're doing it more than once or twice a year. I don't have any experience w/ this because once I removed them I put them on the shelf, but seems if you are concerned about on road handling w/ no front sway bar it would be beneficial to just install quick disconnects, so you don't have to snake it in an out of position each time you want to wheel...but not sure if anyone makes them for our trucks yet?