The electronic viewfinder has the advantage that you can directly see the end result but has some drawbacks in low light. Manual focus is not a big deal as the focus peaking option helps you a lot.
I love the 35mm perspective on a full frame camera that is why I opted for the Voigtländer 35mm 1.4. The only thing that I really regret on that lens is the minimal focusing distance of 0.7m. With the Canon 35mm 1.4L you can come really near to your subject (0.3m) which gives you great close-up especially when you´re shooting portraits or some decoration details (an option would be the “Voigtlander close focus M Adapter” but I cannot find it yet in the Netherlands…).
Beside this small issue I found the pictures a little bit softer than the pics I shot with my canon 35mm and in back light the Voigtländer was subject to a lot of flare (but I did not use a hood).
But it´s okay as having 770g on my hands instead of 1630g for my personal and family pictures is a great feeling. Enjoy the pics and tell me what you think.
Have a nice week-end,