I tried the vanilla chocolate chip flavor of Tactical Snacks energy and protein cookies and overall they are pretty solid. The taste is similar to other protein cookies I have had in the past. There is a slight artificial sweetener aftertaste, but it is not overwhelming or overly chemical.
You can definitely tell there is caffeine in these. There is a noticeable kick, and you can almost feel it on your tongue. At 50 mg per cookie, it delivers a legit energy boost without needing an energy drink. If you are sensitive to caffeine, I would recommend starting slow or eating only part of one.
Nutritionally, they are relatively low calorie with a good amount of protein, which makes them a convenient snack earlier in the day. I would not eat one at night unless you plan on being up for a while.
Overall, it is a good functional snack that tastes fine and does what it promises. My only minor drawback is that I would prefer a longer shelf life for more of a prep style pantry snack. Still, I would recommend them if you are looking for a protein cookie with an energy boost built in.