Blackberry woes

Blackberry is primarily aimed at corporate users. If I have a blackberry, it is obvious that I will have a personal mobile also. Now I have to keep two mobiles with me so that I am connected to everyone.
Blackberry should have dual SIM capabilities in all their devices. This way a person only needs to carry one device and attend to calls on both personal and business calls.

Why are such simple design needs not catered to by professional devices? What are the developers thinking?

New Email signature

I do not despise sending emails from Blackberry device but why does their signature have to read "Sent using Blackberry" or "Sent from my Blackberry". Do you have to flaunt a BlackBerry!

I prefer having the following official signature "Sent from MS-Outlook, would prefer an iPhone."