I am still living in the dark ages of region-lockdom and as such, have never bought from MoC in the past, but if a Sunrise BD were region-free, I would buy it up in a heartbeat, gladly making it my first. If my vote is worth anything, I honestly find BD/DVD combos to be slightly annoying. I have no rational reasoning behind this, other than a aesthetic preference toward excluding things from the packaging that are useless to me. And even though, yes, I could throw away the DVD if I wanted, I'm sure the empty DVD housing left in the packaging would nag at me to no end, to the extent that I allow DVD packaging to reign over my life (which, to be honest, is probably only around 7%). The only way the addition of a DVD for someone who has made the Blu jump makes practical sense to me is for portability. But let's face it, Sunrise isn't exactly the first thing you think of when popping the kids in the station wagon for a long drive.
In retrospect, I realize that, like swo17, I have no rational reasoning behind my decision to vote for separate releases only. I would change my vote if I could figure out how to do it.
Having a combo edition, despite any concerns about aesthetics and waste, would be nice—then I could lend the DVD to a friend that doesn't have a BR player, have a backup in case something happens to my BR. And of course, if I were not yet able to play BRs but wanted to in the future (i.e., if I had read the poll question correctly), I would want the combo edition as a way of future-proofing.