I've watched LPL videos and practiced on regular locks, I can pick something that is about 10$ or less, but these expensive locks with good tolerances (Abus) or disc detainer cores (kryptonite locks,) no amount of practice and fiddling with the correct tools has ever opened one of these. I lack the skill or touch.

I can hold a 18v grinder with a cutoff wheel just fine though, I lost the keys to one of those kryptonite locks on my bike and I was riding my bike again 30 seconds later.