I use it for a year. I've used a FC300 and there is a long FC50 Boss.
So to say the LG2 has nothing to do with the FC300 because it is fully programmable in the administration interface on the PC. Very simple to program.
On the other hand you can connect another pedal (Behringer or Roland FC200 or 300) to extend the functionality and can connect 4 expression pedal or footswitch.
There is possibility to create small programs to manage the various controlled devices. But I never used it because I did not have utility.
The LG2 is a marvel of technology and truly the best in its class for its price / quality ratio. much cheaper than Liquid Foot (and more efficient on some points that I read on a forum that expressed the designer) or Mastermind GT, more austere appearance ... I certainly recommend it for those who really have a tight budget.
On the other hand the manufacturer in Belgium, I received three days after my order (although I had gone to buy a Liquid Foot more expensive but very difficult to control ... I gave up!).