Hi, Charles. Sonic results between Carpet Spikes and Gliders would likely be equivalent, but not necessarily the "same." It's more a matter of the functionality that you prefer. Superior Carpet Spikes provide more secure lateral stability; Fat Gliders allow easier positioning/movement of your speakers.
Because your speakers work well with furniture sliders, I think it's a sure bet that they would work as well and probably even better with one of the Glider options. I think Treaded Stud Gliders would be your best option because the Gliders would be held securely in place while readily removeable.
BTW, commercial furniture sliders usually give a poor result with floor-standing speakers, but if they are giving excellent results with yours, you might just be okay as is.
SteveHerbie's Audio Lab