Editing H.264/AVC lossless?

Hello,

we have bought a Aiptek AHD-200/A-HD720P Camcorder.
It stores the movie files on SD cards as 1280x720@30fps mov-files, coded with H.264/AVC.

VirtualDub can open the files but is unable to save the H.264 Stream from the Mov-Container. Avidemux2 has some troubles too, but basic keyframe cutting seems to be working with the version that has been released on the 23rd.
The Videoeditor Jahshaka seems to work great but unfortunaly it is slow with the HD video, even on a P4-3,4 GHz with 2,5 GB Ram

Is there a way to edit the video lossless, or even H.264 support planned for Zweistein?
Importing the mov-files did not work, and imported converted streamcopy-avi took long.

I could convert the video to another format prior to editing, but it takes for ever and reduces the quality (unless I convert it to uncompressed images which results in too large files to really store them).

Example-file 6 MB http://wap.cc/ae/aqua/ahd200_u6s_/FILE0041.MOV

Thanks in advance

Merry Christmas!
Marcus