I don't know about the EOS spec and the link decided it didn't like me. But on a lot of German convertibles, there's a pop up roll bar that is 'smart' enough to come out in a rollover. Perhaps the EOS has one?
A couple of years ago, there was a NOVA episode where a camera on an autobahn had recorded an accident. A Mercedes convertible came flying around a corner, missed the roadway after oversteering, went up an embankment and rolled over at least 4 times down the road. After it stopped, driver emerged, dizzy but uninjured. He staggered around, then kind of shook his head and was completely ok. In seconds, the roll bar had extended into place as soon as the wheels left the ground. Very impressive. Considering that corners on the autobahn are designed for very high speeds, he had to have flipped at around 100mph. I think they said he had dozed off or was looking downwards. The episode topic was about how technology had made our lives less dangerous and delved into the technology of this pop up roll bar that was completely hidden when unneeded.
Pretty cool, but it still didn't make me want to run out and drive a convertible.
I'd rather keep my skin fresh, young, and hydrated. Sun and wind is no fun... and why get a convertible only to keep the windows and top up all the time?
I can't advise you what to do or say, other than it really depends on how strongly you feel about this car. If you dislike the idea of it, then use the battle veto. In my household, since we occasionally drive the other's car, either one can overrule a purchase due to practicality or absolute dislike. On the other hand, rarely do we ever disagree on vehicle taste, so disagreements don't ever seem to happen.