I still have my Pentax k100D with kit zooms, 50 f/1.4 and a Sigma 28-105. I don't use it much at the moment, may be I'll bring it with me in the next photography challenging travel, may be I won't and I'll bring only my Xz-1. I really don't know what to do.
I feel very fine with my Olympus XZ-1 but I know there are still pictures I can't take with it. The reflex can take them. I think that a M4/3 with 17 and 45 is all that I could need aside the compact, but I'm afraid that I wouldn't use it much more than my Pentax, so why should I spend all that money. Maybe I should keep my Pentax, sell the zooms and buy a DA 21 Limited. Maybe I could just keep it as it is, I love using the 50 and I wouldn't make much money selling the zooms.
In any case XZ-1 is my everyday camera now except when mountainbiking, when I use an all-weather Pentax W80.