Raking without a pick seems out of my reach. I don't finger pick much. Not even on a classical.
I suppose I can give it a try sometime though. Just like with a pick but with your thumb?
I have a long index fingernail that I use as a pick, that and just my fingers. I just find it easier to "feel" the strings with my right hand (assuming your right handed) without a pick. Then again, I taught myself guitar and never used a pick, so I actually find all playing easier without a pick.
Usually when you use your hands over a pick, you play slower but can get more tones and phrases out that you perhaps couldn't with a pick, but if you use your finger as a pick, you can go just as fast (although you have to play a little harder) as if you had a pick, and you can quickly go from say tremolo picking, to hybrid picking, to arpeggio sweeps, without any fuddling with a pick. I'll pick tap with my finger, sweep with my finger, hell I Travis pick with two fingers and most people use three. I love fingers!
With that said, I usually find sweeping more of a subconscious, inadvertent way to get around easily. Especially playing and shredding major and minor octaves. I rarely notice myself doing it, unless I really start going and get into a groove/zone.
Trying to find X-Ray Spex
I live Off You tab, but cant find it, anybody know a link to the correct tab?
I remember when I went through my obsessed-with-sweep-picking phase that most guitarists I've known have all gone through. I got pretty good at them -- managed to do some full six string sweeps with practice. I haven't played anything technical in so long though I probably couldn't do them easily anymore. Nowadays I like to think that I play with the sounds my guitar makes rather than really playing the guitar itself. I've become a bit of a shoegazer it seems.
I like "Shoegazing" surf songs and punk surf. Jack The Ripper for example sounds awesome all grunged out with mass reverb and feedback.