Now I have several news on the project.
First, I have updated its project page to be more clean and informative.
Second, I have posted a new Approaching online zpool switching between two FreeBSD machines article. It shows a simple solution for online or, truly saying, almost online safe Fail-over and Fail-back of ZFS pool between two storage controllers.
Third, I have updated the most important paper about the BeaST storage concept. See The BeaST Classic – dual-controller storage system with RAID arrays and fail-over Arbitrator mechanism for details.