Damon,
I found the Tamiya Zimmerit decals far more tedious and time intensive compared to make-your-own-zimmerit-with-tamiya-gray-putty-testors-liquid-cement. Cutting the zimmerit stickers out really wasn’t my cut of tea. I had to use a metal straight edge and keep a fresh new blade available to cut and trim. Precision cutting with a knife blade is one of my weakness as model builders so the stickers were difficult to use.
A few edges required a touch of CA to lock down. Several corners required liquid cement thinned putty to be used to fill the sticker edges.
The adhesive has held up well. They decals were applied in 2021 and all of them are still secured. When drybrushing I lifted a few edges and had to reseal them to the model with CA.
To my eye, the Tamiya zimmerit decals look better than Italeri’s crappy molded zimmerit and better than Eduard beyond crappy PE zimmerit. Most other options look better than the Tamiya stickers too.
On the plus side Tamiya provides plenty of stickers material with pattern options for turret face etch.
From distance overall the Tamiya zimmerit stickers are OK…
…I am very unlikely to use them again.