After seeing Jeff Beck and other lead guitarists use their thumb without a pick, I don't feel like such an outcast. I actually prefer a pick on lead guitar but I can't seem to get my fingers to sound nearly as good as my thumb. I can actually play all of our songs this way except for a few which I use a pick. Queen's Stone Cold Crazy and The Other Side by Evanescence come to mind. I just hope I haven't dug myself into a hole because using my fingers just doesn't cut it in sound or smoothness. It's like when starting on drums, I was taught traditional grip and soon found it inferior, but after years of rudiments, I can still play some of them better with the traditional grip but playing songs on the drum set is better with match grip. The thinking was, I would learn songs with my thumb and then fingers. I guess my finger nails extend further towards the tips than most, I don't know but even cutting them short as possible still doesn't prevent the crappy sound. I do find myself playing too hard with my fingers. I make an effort to play softer with the meat of the fingers but no matter how I play, it doesn't compare to the smoothness and sound of the thumb.