Wow, looking back I wonder who wrote my last response.
Lash - I completely agree. Why spend extra money if it'* not necessary.
Not sure if I can agree with the Mayhew since Bill Buttermores is starting to fray on the cable, this isn't the place for a discussion on quality of the Mayhew though. (That'* another thread).
That Ebay one should work for the job, and once you use one of these spring clamp tools, you'll like it. It takes all the challenge out of spring clamps, easy to get at or hidden behind a strut tower.