One of the main benefits to me of the RIM approach is convergence. I don't care HOW people want to communicate with me (voice, SMS, MMS, email) and the idea that all messages (of any type) can simply be listed in one linear "audit trail" by time is one of the great differences between a BB and other devices. You CAN view by message bearer type (by selecting to view a specific folder) but the consolidated linear view is always there.
In a WM5 device, for example, you wind up with a horrible "tree" of folders for MMS, SMS, each email account, exchange folders, etc etc. It's a nightmare just to find a message, as you first have to decide what technology/account was used to send it - which is just stupid IMHO.
I guess I don't "get it" why messaging has to be arbirality split up separating those with whom you communicate via MMS/SMS and everything else. What's the point - it just seems to be forcing me to think about one more thing I didn't have to previously/with other themes? Shame...
W