I personally think Old Pochmann would be faster than 3OP with enough training. I used to use 3OP for a few years, and the amount of memorization used in 3OP is significantly more than that used for Old Pochmann. Yes, the memorization method for Old Pochmann needs to be more robust (assuming you're using something other than pure visual). However, as long as you do use a more robust memory method for Old Pochmann, then your memo time will be much faster than 3OP, in my personal opinion.