I think he means that you can't hit "R" as a reply shortcut from the Messages app where many of us first see our incoming SMS messages.
I strongly agree with the complaint.
If it's a mistaken omission on RIM's part, they need to fix it.
If they intend to leave out the ability to reply to an SMS from the main messages list by hitting "R," they need to get their heads checked.
9630 #4 < 9630 #3 < 9630 #2 < 9630 < 9530 (returned) < 8703 < 7250