I’ve used the duplicate project command and worked alternatives in on the duplicate. then just switch between them. I find this to be pretty close to using alternative sequences in FCP 7. you still need to switch between them. yes, in FCP 7 you could actually put them on the same timeline, but I find that having two options on the same timeline is kind of sloppy organizationally anyway (though this can be done in FCP X too). So I guess I see using alternate sequences in FCP 7 is similar to using alternate “projects” in FCP X.