I'm with Piltdown Man and the CAP 407! When I flew 4-jets, the fact that ME time wasn't in seperate columns was no real biggie. A colleague used the same logbook for everything from 747 to Cherokee via Venoms and Vampires. No problemo.
Interestingly, it doesn't really matter what you record your flight time in - an ex-Concorde captain I knew used to use cheapo school exercise books!