Sorellina,
Alas, I have not. But I've done a lot of searching for opinions and of course, they are not 100 percent positive, but almost everyone likes them. Since I don't have room to sow a huge number of different types. I have Beefsteak and Red Delicious which are well known here, Red Zebra that is very prolific and a great juicer, Roma for those who want that type, Green Zebra which I grew and love for salsa, Riesentraube for my cherry type, and Golden Monarch for those who want a yellow one. Another reason for the Siletz is it is supposed to be parthenocarpic, meaning I should be able to get fruit without the need for birds, bees or shaking the plants. If the plants produce close to what I hope and expect, I want to set up a small greenhouse operation and sell them year-round.
Mike