I prefer the Machingers gloves too. Tried the Fons & Porter but the others are a better fit, more flexible, more comfortable overall for me.
I have the slider which I think helps but I also covered by foam quilting table with a good quality oilcloth (let me know if you want the source) and it is every bit as slick as the supreme slider thing. In fact, I have trouble with things sliding off of it when I'm not doing machine quilting.