As long as the training covers everything in 61.31(g) and it is noted in your record you're good to go. Paragraph 3(iv) even goes on to say: The training and endorsement required by paragraphs (g)(1) and (g)(2) of this section are not required if that person can document satisfactory accomplishment of any of the following in a pressurized aircraft, or in a flight simulator or flight training device that is representative of a pressurized aircraft: (iv) Completing a pilot-in-command proficiency check under part 121, 125, or 135 of this chapter conducted by the Administrator or by an approved pilot check airman.
So, some people (myself included) don't need any endorsement at all if they fall under para. iv. Neato.
