I have grown plants from seeds, I have even managed to grow a handful out of the cuttings from the mother plant. But I have never grown a plant using the soak-drain-place in wet cloth-let it sprout method.
I have done this a million times to make sprout salad (with mung bean, chick pea, brown bean), but never used this method to really grow plants. As a test (or as some sort of a sowing-growing versus alternate method race), I have also sown the seeds of Cassia Fistula (Common name: Golden shower tree, Tamil: Sarakondrai) in soil and have soaked some of them in water for 24 hours and placed it in a damp cloth.
Now, all I can do is wait. Happy Gardening!