a) As someone who has really long femurs, I use a trap deadlift bar. If it helps me to maintain good form, who's to quibble?
b) I also have wondered about the CF 21-15-9 135lb power cleans or the like. I guess I'm a wimp because I can't maintain perfect form with that number of reps done right away. Since I'm trying to learn the O lifts and possibly do a masters' meet at some point, I'm careful about blowing my technique to h-lll with 45 imperfect reps. I also think it's a recipe for rotator cuff tendonitis.