Please check out this live performance of "Your Latest Trick", by Dire Straits, as it is a perfect example of the question theme:
Notice the fast arpeggios that happen towards the end of the solo. What are the techniques/principles involved to play a slide arpeggio this clean?
What I mean is: when you're playing with a slide (at least on a regular guitar), it's hard enough to keep the strings you're not playing from sounding even if you're playing single string melodies with reasonable time difference to switch between strings when necessary (see, for example, the guitar solo from High Hopes, by Pink Floyd).
But in this arpeggio in the video I sent, there are many notes played very fastly across different strings and there's strictly only one note sounding at a time.
Anyone who's familiar with sweep picking (in regular guitars) will know how big a deal it is to keep only one note sounding at a time even if you have four fingers to do the work. With a lapsteel guitar played with a slide, you only have one big, unsensitive and inflexible metal/glass "finger" to do it. So, how different is the "sweeping" (or whatever it's called) technique on a lapsteel?
Note: obviously this solo is executed by a world class player (don't know his name though). But I can't determine if this passage is powered by sheer over-the-top ability over a simple principle, or a certain technique that makes it easier than it seems to be, or a clever tuning that puts the notes in comfortable places, or a combination of those.
I'd be also interested in marginally related information, such as players who play this kind of thing, other songs with similar passages, technique videos/books/articles or songbooks/transcriptions.