Lowepro Orion 2? Will it fit?

Need to get a camera bag and want a ruck sack type with enough space for my lense and camera plus the odd sandwich or two.

Anyone got or have used the lowepro orion 2? Big enough?

Equipment carried is listed at the bottom.

Cheers.

I don't know anything about the Orion 2 but have a look at the Lowepro Fastback 350. It'll be big enough.