I ordered the small Gucci Marmont bag but I've had to return it as it's just not going to be big enough for what I need, so I'm now looking into the Gucci Marmont medium size but I've heard some people say they feel it's a bit too big to wear crossbody. Is this true? I know obviously you can wear it crossbody, but is it comfortable like that? Also, is it a heavy bag? I don't have any Gucci stores that near where I live, so I'd rather not have to order one again to maybe have to return.