I'm leaving today for a week with the family and this is it:
m6, 35 cron, 50 elmar-m, summitar, xpan and 45 all in a small pelikan case so I don't have to worry about them.
In my backpack my IIc, meter, hoods. Film in the suitcase, I'm only going to California and can always buy more.
I debated taking the p case but after many travels with people stuffing things in the overhead or having a soft bag under my seat that I have to watch, I thought this would be a good solution. I also take a small shoulder bag in the suitcase for walking around.