That being said, they're bigger than most of the little sockets you may need, be careful with torque. And a small metric set of sockets isn't that expensive these days.
As one who does a lot of mechanical work that gator grip is one of the most scary tools I can imagine using in an engine compartment. Watch one when they fall apart. Little bits go flying everywhere. Good luck if one falls in a spark plug hole, intake, or water jacket.