I have a 2.5-week-old international version Galaxy Note (n7000) that I got to replace an HTC Inspire. I was using a Sandisk 64 GB microSD that I got from Amazon in the older phone (that phone formatted the card, too). When I changed phones, I just swapped the microSD (and sim card) from one to the other.
The card reads and writes without skipping a beat (it is listed as "external_sd" in file managers). Also, I can connect my phone to Windows 7 PCs and read and write to both the 64GB microSD card and the phone storage readily. By adding more--and higher quality--movies to the card, I've taken it from around 40 GB in use to around 50 GB full (of around a possible 59.4 GB).
I am completely stock. The Galaxy Note was running Gingerbread out of the box, but a few days after I started using it, it received, and I flashed, an OTA update to ICS. The card has worked in both situations.
I hope my seamless success continues.