I found an old ammo bag at a military surplus shop. It looks like a small courier bag made out of heavy canvas, with a fold-over flap, and dividers inside. It is the perfect size for the Hasselblad (or Rolleicord), an extra lens, a light meter, and a bag of film. It was $4. Also, it doesn't scream 'camera bag' when people look at it, which I like.
Last year I took my RZ to a parade and when trying to cross the street I almost got hit by a float because I could barely move with that heavy thing. Anything with wheels would be a great benefit when taking that thing out for a walk.
I like some style...more the purses that are fitted for carrying cameras so you wouldn't know it is a camera bag at all. fine for a rolleicord and another smaller camera, meter and film but ...never been fully happy with anything yet for the hassy. That is something I'm still trying to figure out without carry luggage! LOL!
My work requires that I carry my Hasselblad and 35mm equipment together and sometimes it requires a hike into a location. I carry both systems in a Lowepro Super Trekker backpack bag.
The Hasselblad always sits on a tripod which can be strapped onto the pack.
I use a neck strap on my tlr. It hangs straight ahead with a down angle of about 10 degrees or so. I could not find a name on the strap though. Any neck strap should work.
I have my RZ67 attached to my tripod at 90 degrees from horizontal. I then have a neck strop on the camera and a shoulder strap for the tripod. When walking the tripod is roughly horizontal with the camera pointing forward. It's quite comfortable and very nearly balanced (Manfrotto 055XPROB/496RC2) even with the legs retracted.