Just made it through 3 different flights between September and today, each one I had a carry-on bag that BARELY fit in the overhead, packed gear, batteries, cables, clamps, computer parts & hard drives.
In sept, I had to parcel stuff out. Anything with a hard drive or lithium battery had to go into a bin for separate scanning. I was really good at packing for this over the years. By thanksgiving, the rules has changed. Shoes on and laptops left in bags. Christmas we were back to shoes off and laptops in bins again.
But no one blinks at all the taping gear.
I even left the 9v batteries in the bag the last 3 flights with no problem.
In my experience, it's tougher to get into a venue than on the plane these days.