Thank Mr XPX.
I checked the japanese website. Unfortunately it comes with a built in lock and it seems that is the only mechanism to keep the bag close. If I were to carry heavy items looks like its going to break at that point.
Btw there is nothing cheap about SBL in terms of quality. Have you actually own one? The only reason I'm looking at Skytop Pullman and their other product is because of the lining and ofcourse the elegant look. SBL use only pigskin lining and it makes the bag a little stiff and takes some work and time to break it in.
I can't wait to own one of the Pullman in the same brown colour.