Some people have also noted before that if you drill all the way through you could potentially have an issue with dampness from the ground below coming up through the hole and corroding fastener... but you could probably make the same argument that if you don't drill all the way through and water gets down he hole it has nowhere to go.
If you're not drilling all the way through you can always just take the more normal approach of cutting the studs flush with the slab when they're not needed anymore.
If you're not drilling all the way through you can always just take the more normal approach of cutting the studs flush with the slab when they're not needed anymore.