Diaper Dude Diaper bag as Park bag?

[CampbellScot]

Has anyone used one of these? They are diaper bags geared towards men, but they are also very handy looking messenger bags with lots of pockets and room to hold things...just wondering if anyone has one of these and used it as a park bag? They look a little on the big side, which I don't want. I have an Overland Donner bag, which was great last year, but that was my honeymoon and just the two of us. This year we are brining the step kiddos and I'll probably need a bit more room.

So diaper dude advice anyone? Anyone?