Am I reading this right? Your boss wants the SAME contact on both phones but wants one phone to have the email address with no phone number and the other phone to have the phone number with no email address. Is that correct?
That seems a bit odd - why not just have the same contact info on both phones - is your boss concerned that he/she may make a phone call or email from the wrong phone? Is there a reason why your boss can't just use one blackberry?
Sorry I'm not much help, but I am curious as to why your boss wants this - I may learn something. I'm also guessing that any solution would allow you to do it one time (with a lot of manual effort) but then you would have the challenge of doing this on a go forward basis as your boss adds more contacts.
Your profile says you have a blackberry 3500 - I haven't heard of that model - is that model number correct?
Keep us posted and good luck.