Oh, I already use that when I am on the go, when I only want to recieve calls/sms, but allow myself forgetting about email and surfing the net...
The option you miss is accessible fast with 2-3 gestures:
Turn data off, this way:
Set up your "fast settings" screen to see the network, then don't click on the symbol, but on the name of the carrier:
Example here: when I swipe down, I see this setting:
Then, I don't tap on the "Antenna symbol" because that toggels on/off, but on the word: "Mobilfunknetz/Telekom-de"...
This opens this window:
Turn off the second button (mobile data) and TATA: You have the setting you requested!!
Okay, it's not in Beside mode, but the setting is there... you can turn into bedside after that!!
Cheers.
BlackBerry*Q10, T-Mobile Germany - SQN100-3, Running OS 10.2.1.2941