I would say they are a little smaller that the Oly, but just as heavy.
I have one and would not part with it, results on 400 asa film have been stunning, which is probably to be expected as they were made by Rollie,
The only downside is 4 625 batteries (ok, I know it will work with only 2, but that's supposed to be emergencies only).
Just my opinion, you understand.