I was wondering the same question! I have some Green Sausage Tomato plants in the greenhouse - they've been surprisingly productive, lots of lovely stripey, sausage-shaped tomatoes - but because they're green, I don't know how to tell if they're ripe. I also did the 'squeeze' test but they seem very firm, despite being a good size for some weeks now. Trouble is the plants are starting to get brown crinkly leaves, and I'm sure it's the beginning of blight (I lost all my outdoor tomatoes the other week through it), so I'm eager to get some fruit off them before they shrivel and die!
Has anyone tried to grow Green Sausage Tomatoes before? What did they think of them? This is the first time I've tried.