shoulder bag question

I'm looking for an extra camera bag. I use at this moment Vanguard up-rise 45 and a 48 backpack and a Canon shoulder bag. Now I want to replace the shoulder bag for an National Geographic 2345.

Now is my question is it big enough for an 550D/gripped attached 70-200 or 24-105 with lens hood. Both lenses has to fit in the bag

I saw this bag on the airport of Shanghai yesterday and it looks fine for me. But I did not had the time to test it with my gear. Plane was leaving. Also did not find an store nearby that have this bag in store.

Hope some one can help me out

i dont think it'll fit with the grip. if it does, then i'll be super tight. my NG 2345 is full with T1i/50mm and two lens and set of extension tubes stacked.

Thanks,

I've just decided to go for the national geographic 2475. Just ordered it.