I recently contributed some of my material on Sankethi to Simon Ager, who runs a blog about foreign languages and their scripts, called Omniglot. Thanks to that, there is now a page on how to read and write in the Sankethi language! You can check it out here: http://www.omniglot.com/writing/sankethi.htm.
Omniglot has been an invaluable resource to me as learner of foreign languages, as I learned to read and write in Hindi, Kannada, Hebrew, and Korean because of it. I highly recommend the blog, as even the pages on languages with Latin scripts are immensely helpful, as it details all the possible combinations of letters and what the pronunciation of those combinations will be! French learners, do not pass up the opportunity to use the French page! It just seems to me that it clears up a lot of ambiguities and such. As a rule of thumb, I always visit the Omniglot page of a language before I start learning it or even consider starting to learn it. So, bookmark his blog and make use of the incredible resource!