It works superbly with the Ultron 35 and Nokton 50. The 28 works beautifully too but seems to shift the focus range way beyond infinity and the nearest focus point is around 3 metres away, unlike most rangefinder lenses which normally go down to 0.7m. I'm thinking this may be an anomaly unique to the 28.
It's just the wonderful thing with mirrorless - I've got other (to Mu43) adaptors to Nikon, M42 and OM glass as well. The old AI-Nikkor 105-2.5 is just incredible on the small sensor, especially with IBIS helping out, and of course no collection is complete without a Helios 44M in tow.
The Voigts are just tiny though, and really fit in with the Mu43 'way'.