No experience directly with the GeoReplicator but have been aware of it for some time. I met one of their developers at a London User Group meeting some years back.
It was initially iOra, then sold to Infonic now back to iOra again.
I have some projects I wouldn't mind talking to them about but I'd need convincing that the company was stable and going to be around for the long term first.
It really all boils down to your requirements - "taking SharePoint offline" can mean a whole host of different things.
Paul Leigh
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Designer of PhoPho & PhoTab, photograph frames that double up as tablet and smartphone stands.
www.jackdawdesigns.com