I recommend all sound techs have at least a couple of these nearby. Clamping it to the rim of a drum is easy and it doesn't get in the way of anything. It's perfect on snare drums and toms where getting one or two mic stands in between cymbal- and hihat-stands is troublesome. However, due to the way this clamp is constructed it won't work with all microphones. The mic mount sits pretty high above the rim.
With for example a sm57 or similar long body type mics, it's no trouble, but with odd shaped, or side address microphones, you might find you can't get the mic close enough to the drum.
Very good, but not the perfect mount.