Actually, yes, most of the interlocks are there on the RB as well - not clear indicators as such but the shutter won't fire and that basically tells me a Lock has been tripped!
As someone on a flickr group said 'if the camera isn't letting you fire the shutter, generally means you screwed up!'
Its just an amazing product and piece of design and engineering, I feel thrilled just to hold it.

I mixed up in my earlier post. I wanted to know if the usage of flash was similar between RZ and RB ; OR does the RZ have a hot shoe or something?

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