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Never been spanked by somebody wearing leather gloves. Probably similar to a bare hand.
I can say that I love the feel of a leather paddle.
We have two leather paddles and my wife applies both of them rigorously to my bare bottom.
I love the feel of the floppy leather paddle because it wraps itself "around" both cheeks by adopting to the curve of the cheeks, slapping evenly over the shape of the leather. I can't fully describe the technical stroke or splat of the floppy leather paddle.
I also love the feel of the stiff leather paddle. It's not a soft "fluffy" leather that dilutes the smack on the bottom. Its a stiff, hard leather with a smooth side that smacks just right and an "imprint" side that "grips" and stings a little more.
So, I love leather paddles that seem to grab the skin and the cheeks for a different feel from wood. Wood tends to smack or thud depending on the shape, thickness, and shape of the paddle.
Actually, I love all the paddles and striking implements: wood, leather, and hard-plastic paddles, wooden bath brushes, Delrin cane, traditional canes, and more.