Actually running the cable in a metal raceway (that's what they're called) can provide additional shielding from RFI/EMI.
The problem is that if the stand is grounded, i.e. if it has spikes that go into a concrete slab-on-grade floor, (not a wood floor) it can allow the cable to build up some inductance. That's why some people use cable-lifters to keep their speaker cables off the (concrete) floor. Personally, I wouldn't worry too much about that since the raceway probably isnt more than a couple feet long?
The problem is that if the stand is grounded, i.e. if it has spikes that go into a concrete slab-on-grade floor, (not a wood floor) it can allow the cable to build up some inductance. That's why some people use cable-lifters to keep their speaker cables off the (concrete) floor. Personally, I wouldn't worry too much about that since the raceway probably isnt more than a couple feet long?