Reno: I hear where you are coming from, however:

1) I dont believe that 1910.67 was written to address scissors lifts. I think the standard is limited to equipment covered in the ANSI standard incorporated by reference therein. i will say that OSHA could not have done a worse job on the way they have chosen to provide guidance on this type of equipment.

2)using a step ladder/5gal pail in a bucket truck is dangerous and should be prohibited (IMHO). When way up high, those lifts can be really unstable, no place for a ladder...