The plastic and cloth rim tapes at my LBS come in a couple of sizes: too narrow and too wide. Too narrow barely covers the spoke holes (meaning, it doesn't). Too wide gets into the bead area, making it (slightly) more difficult to mount a tire, and worse, it catches on the tire when I mount or dismount it, and when I check the mount to make sure I haven't pinched the tube. Both plastic and cloth tapes move laterally, potentially exposing spoke holes. Aamof, the cloth rim tape I installed a couple of rides ago has already shifted a little. Once off center, both cloth and plastic tapes take a set, making them tend to stay off center.
Tubeless tapes have an actual adhesive backing, as opposed to the tacky stuff on cloth tapes, and nothing at all on the plastic ones. The adhesive should keep the tape from moving (right?). Some tubeless tapes are also very thin, so are unlikely to be pushed off center by the tire during mounting/dismounting. Obviously thin tubeless tape can take the pressure, but I don't know if will adequately protect a tube. Has anyone tried using tubeless tape with a tube on a tube type rim? How about thin tubeless tape?
For what it's worth, I ride 700 mm x 25 mm road tires, 100 to 110 psi. I don't get many flats due to rim tape failure--I check the tape when I repair a flat (which I do way too often).
I have another rim tape question. I'll post it separately. Thanks in advance.