Another Rambler fan here, it holds the same advantage as the Wenger already talked about, in that both the blade and the scissors fold out away from your keys.
I'm also very fond of my Ambassador, the extra blade length over the Classic is a real winner in my book. Do be warned though, many Ambassadors don't come with a split-ring attachment so if you want one to go on your keys make sure you pick one up with the ring.
my Ambassador with split-ring.
An example without the ring.
I'm also very fond of my Ambassador, the extra blade length over the Classic is a real winner in my book. Do be warned though, many Ambassadors don't come with a split-ring attachment so if you want one to go on your keys make sure you pick one up with the ring.

my Ambassador with split-ring.

An example without the ring.