John:
I do not believe the MAC PS drivers support locked print, however if you need this, a good work around is Print Audit Secure, very inexpensive, plus you can release jobs from any web enabled device such as smart phone tablet, etc.....
All of the Ricohs that have a ps card can do email2print basically you're sending an email to the device and it will print the file. an't do multiples nor compressed files, this is a nice work around instead of hot spot if the only need to print one file at a time.
I would definatly check out the threads here for Print Audits Secure Print, may solve all of your issues, plus it's cheap!! I think $1 or $2 per prnter per month and you get some awesome features!!!