I've been using those non-stop for the past 5 years. I use both 1mm and 0.88, depending on the playing style. The overall ergonomy is really good and its pointy ending helps with precision. When played hard on heavy strings, as it's my case, they don't last very long but I'm still usually able to play 2 to 3 rehearsals with one pick, which is much better than some others I used in the past.
I bought this bag of 72 picks 6 years ago, and I think I still have more than half of them still in the bag. I have never used a better pick for electric playing. They sound bright, the stay in your hand, they take ages to wear down, and when they do wear down, they're still a pleasure to use. I don't like them for acoustic playing, as I find I break a lot of strings. But, for electric - the best!