Growing from True Seed

There is just one day left to enter your photos in the International Year of the Potato Photo Competition. I'm feeling singularly uninspired right now. I'll blame the drear mid-grey, windless, room temperature 'weather' we've had, day after day, for what seems like months (I griped about this last year around the same time I'm afraid). Most of my potatoes are yet to be harvested but I did reach in and pull out a few Arran Victory tubers which made me smile.
This year I saved some of the true seeds from the fruits, in the hope that I will be the discoverer of a noteworthy variety of hitherto unimagined curiousness, and I've been casting about looking for information on growing them. Alan Romans kindly replied to an email and said to treat them much as tomato seed, which I had guessed, and expect to have small tubers by the end of the year that I can label and store and use as seed potatoes the following year. What I wanted to hear was that I could start them straight away in the greenhouse and have tiny tubers by Christmas that I could plant out in the new year. I have read that the shorter the diurnal duration of light (9-10 hours), the earlier the initiation of tubers. Has anybody out there ever tried this? I'm going to experiment with a few seeds that I'm pre-chilling now in the fridge. What the hey.