Sony E-mount without OSS and 8-pin Sony A-mount lenses get all 5-axis IBIS from the body.
NOTE: 5-pin Sony SAL 16mm F2.8, SAL 20mm F2.8, SAL 28mm F2.8 and SAL 500mm F8 lenses only get Pitch, Yaw and Roll stabilization when attached using a
Sony LA-EA3 or
LA-EA4 adapter.
If I use a Canon L lens with stabilisation via a metabones would I get the lens stabilisation plus the 5 axis?
No. With a Metabones, you can choose between IS only, IBIS only or no stabilization at all. Never in combination since the Canon lenses cannot turn off the axes the sensor takes care of. Sony OSS lenses can do this.
Yes, that's true beginning FW 0.41.
I strongly recommend turning off IS or VR on third-party lenses and allowing the a7-series Mark II body to take care of it. Except for the
Canon EF 100mm f/2.8L Macro IS USM, Canon lenses only provide 2-Axis OS, but a7-series Mark II bodies can provide 3-Axis IBIS.
Not only does this provide an additional axis for roll-stabilization but IS and VR suck lots of power away from AF when using Smart Adapters so turning it off on the lens will provide better AF.
If so is it better or worse having both switched on, I could see a conflict between the two if its possible.
There is no conflict with Sony lenses as the system is designed to work together, but I recommend turning off OS or VR on third-party lenses for the reasons listed above.
There is a full description of how the system works here:
Sony a7II Review
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Brian Smith
Sony Artisan of Imagery
Brian Smith Pictures