BWC will allow you to do what you want with Gmail (you could also pop to your Gmail account, but that'd only be once every 15 minutes, so forwarding may be quicker in this scenario; you can set your reply address as your Google email). Get the add-on BES if you want a 3rd party MDS/BES provider (myblueberry.com, for example) or if you plan on using it with a corporate BES.
TMO has already or will soon roll out their BWC/BIBS 4.0 configuration. I'm not sure what the difference will be for browsing with that versus a 3rd party BES/MDS provider. I've never really used BWC, so I'm not sure.
In the beginning the Universe was created. This has made a lot of people very angry and is widely regarded as a bad move.