Bought the LBX - 600 Footswitch a few weeks ago, First impression is that it is a sturdy unit, made with decent metal construction and not cheap plastic.
On trying this out found it was useful in a few different ways, I play acoustic guitar and sing so was able to turn on/off the second effect on my Amp (Fishman Loudbox Artist) which meant I was able to have reverb on both vocal and guitar, and when required could stomp on pedal to add chorus/echo/flange to one or both channes on the amp depending on which option I had set up on my amp.
The other thing I thought was awesome was the ability to mute channel B as now I can mute the channel and unplug my guitar without having to turn my master volume down on the amp, will also stop guitar squealing when left on the stand. well worth having and lets face its not an arm and a leg price wise either.
Glad I bought it well worth the money!!!!