Welcome, both to the Blue Room and to wonderful world of Amdram!
Yes, lots of us in here have used PCC160s quite a lot, as well as cheaper alternatives.
To answer your specific question, yes foot noise can be a problem and most users recommend isolating the mic from the floor with some form of soft rubber. In the past I've suggested cutting out the base shape from old (soft) mouse mats...that seems to work as well as anything.
There are quite a few existing topics about the use of boundary mics. If you enter PCC160 in the search box you get when you click the "Search" button in the menu bar above, you'll get lots of info but the most recent topic is
HERE but, as I say, there are lots of others.
Cheers,
Bob