5DII to M9 In need of urgent help with lenses

I am reading Thorsten Overgaard excellent blog and it says:

"90mm APO-Summicron-M f/2.0 is currently not being produced, aparantly because Leica Camera AG is working on focus precision issues on this great lens which focus mechanism was not made for the demanding Leica M9." http://www.overgaard.dk/leica-90mm-Summarit-M-f-25.html

I will have to rethink what to take for our vacation. 90/2.5 Summarit seems more than OK,

I am on a waiting list for the 50 Summilux and I have a chance to get it just in time for the vacation.

For my photography at his moment in time the most important pics are of my family and the best chances for this is always when traveling to many different distant places by plane, by train and in our car for 6-8 weeks every year.

There are many reasons for going from DSLR gear to Leica M.
Having access to the M lenses.
Getting down i size and weight. (Never again lugging 5-10kg camera bags!)

I am in full control of my photography helped by the simplicity and directness of the M9 tool I can simply set the white balance, Iso, time, aperture and distance.
Thats all I need in a camera.

Just bought *

M9-P *
21 Super Elmar * My WA lens for architectur and general WA use.
35 Summilux * Main "family life documentation" lens.

50 Summilux? Main "one subject" lens.
90 Summarit? My short tele lens. Anyone here using this lens?

Best Regards
Pierre