originally yes, I had issues, but thats because I was just using waaay too much lube. but using the syringe and very lightly lubing the sliders has not caused any problems for me.
I can't tell the difference between a traditionally lubed one and the way I do it, but while I don't think lube can hurt, I do think its pretty over hyped. I'd much rather take a worn in switch than a freshly lubed new switch.