Has anyone tried Lasermate sights?

[Nando Aqui]

My wife would like to try using a laser sight with her H&K USP 9mm Compact. She might not use it while shooting, but primarily wants it for practicing (dry-firing) at home and be able to detect how much she moves the pistol when pulling the trigger. (BTW, she is a real good shot and is continually trying to improve.) Heck, after she mentioned it, I might try this myself on my USP .45 Tactical.

After a quick Google search, I found this, for $44.95 -

LS02- Series Laser Sights:
Pad switch with tactical slide mount is available. Tactical Slide Mount: (M1 Mount) Work with Pad Switch.
Specially designed for the pistols with tactical slide, i.e. (H&K) USP, Walter, Glock, and S&W (SW40 series).

Does anyone know anything about these, or better yet, have any experience with them?

Any other suggestions?

Thanks,

Alex

P.S. Link to the website: http://www.lasermate.com/AIMER.htm