The bag looks more like a purse to me.
Personally, i use a plain black messenger bag. It's very stylish. No one has ever thought it was a purse, and it's very male looking to me.
It goes well with most of my outfits, and i like it cause it gives me somewhere to put all my crap (ie. phone, wallet, lighter etc). I'd suggest something like that. They aren't very expensive, and they're definitely male or unisex.
Good luck!