Hi Kirk,
well the question is not quite about this exercise... I wanted to ask you what picking hand motion do you use when playing scales? Or not necessarilly scales, maybe whenever you play two or more consecutive notes on a single string, or a pair of strings...? Do you use alternating index and middle finger motion or something else?
Just don't say you were using pick in this exercise...

LOL If that's the case, please tell me which motion do you recommend when playing with fingers...
Thanks in advance