When I was in Canada in October, I used the iPhone app to schedule remote recordings onto my EyeTV installation in Melbourne. I'd select Saturday's guide, and see shows that I know are on Sundays (though the time of day was correct local to Melbourne). Despite this, the shows I queued to record did record properly.
It definitely looks like something in the iPhone app is using time-user-is-in instead of time-device-is-in.