hmmm...it would be hard for me to explain my muting technique for sweeping. I don't really use the right hand for it, unless I really want it to sound ultra-staccato. I sweep more like Friedman I guess, my right hand is up far from the strings. I guess I kind of mute with the left hand as I go. Making sure one finger isn't on a given string unless I am hitting a note on that string. It is kind of tough to explain, but I don't really mute with the right hand at all on a sweep.
Question for muting though, since you brought it up!
On the string-skip tapping stuff, I find it difficult to keep a string from "sproinging" after I leave it and move to another string. Of course, you could use a dampner and that would take care of it, but I wonder what Romeo does. I doesn't really look like he mutes with his right hand. Hard to see though. any ideas? I can take the conversations from this thread and put em on the site to so people can come back to it for reference.