I think they're cool, too, but I'm more into the $300 bikes than the $3,000 bikes. Anyway, don't be afraid to get one even if a trailer makes more sense- just having a cool ride is neat. That's why people buy convertibles.
One thing to watch for is hills. Riding my cargo trike around, it's low geared but an extra hundred pounds or so can just pull you to a stop on a moderate hill. So if it's pancake flat, you're in good shape. There's a reason these are Dutch bikes and not Colorado bikes.
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"be careful this rando stuff is addictive and dan's the 'pusher'."