Yes I have noticed it. I have already studied the Yngwie's and Michael Romeo technique. As for yngwie he olays with the fingers only when playing slow but when moving to fast tempos, he plays from the wrist and fingers. Michael Romeo plays with his fingers at all times and very fast, but he keeps his hand at about 170 per cent angle to the strings. I have tried this it gives great control, the only problem is speed because you must move your thumb in up dovn movement which is kinda unnatural. Then I stumbled onto Michael Angelo. When playing slow, he plays like MR or YM, but at high speeds he puts his hand 90 per cent angle to the strings. That means, he plays more backward-forward movement than up-down(like MR does). This is way faster, I can do it even faster than with wrist the problem is that this way you must pick with the side of your pick which doesn't produce sound. Pick should be somehow twisted or something. So I dont know how MA manages this.