Efficient for her. Still the normal amount of effort for him. Well, a bit more work because extra energy to go fast, but he's okay with that. Which is something that needs not to be pointed out. Better to just let himself shiver to enjoy the pleasure of her touch.

"And if I think your bra is pretty to leave on for a bit?" he teases. And the thing is, he does not take her shirt off nearly so fast. No, he runs his hands under the cloth and slowly pushes it up, letting his hands explore her skin. She does not have quite the same friction resistance his body does. He could hurt her easily by moving his hands too fast. Better to be careful. And his hands definitely rove over scars. Not that he sees any point to avoiding them or lingering. They are as much part of her as anything else, and so taken in stride.