yes & I try not to carry 3 of them, as I once discovered! eek! (dunno the brands, sorry)
but the irony is clear for me, when I have a chain problem, like breaking an old chain, I replace it, take better care of it & start carrying a chain tool, but then, never need it. but maybe there will come a time when the tool is useful for a reason other than breakage?
the only time I had a chain break was stupidly riding an old bike with an old (rusty) chain & at the end of a ride w/ my kids, I was showing off, trying to climb a stupid hill, w/ too much stress on the old links & pop! told them no worries I have a chain tool! was so excited to show them how they work, but then realized I did not have it with me! we walked back the 50 ft to the hotel we were staying at near the trail ...