I agree with Albert.
Back to the camera issue.
Why don't you consider MP, M3 instead of M7 or Zeiss Ikon ?
I was in the same boat as you and tried to figure out which body to get. The thought went over me include if I should wait for the Ikon.
I came to the conclusion that M3 in good condition or MP 0.85.
As I do lots of portraits, focusing accuracy is of utmost importance to me. The effective rangefinder base
M3 0.92x 69.5=63.9
M7/MP .85 0.85x 69.5=59.1
Ikon 0.75x 75 =56.2
Judging from the numbers, M3 has the best focusing accuracy. Other factors important to look at includes the brightness of the primary and secondary images. So, do go to the shop to compare the brightness of various models.
The advantage of the choice of mechanical camera like MP/M3 include reliability and the resale value. Electronics can fail in adverse conditions and with time.
Before the Ikon becomes available, I had a gut feeling that Ikon body would not be as good as M3 or MP, because it uses an electronic shutter. It would not be as quiet as the mechanical shutters and also it is less reliable. I trust the mechanics of the old days rather than modern electronics.
I want reliability, good resale value, quiet shutter. This is why I went for MP and M3 before the Ikon came up. Since I made the decision, I have not regret at all.