Hi my friend,
They are the same as any other 3rd party style. However, ALL make use of AJAMSONIC voices, so they would be useless without AJ's upgrade.
I had to purchase the latest EMC Styleworks to create these, so for these I charge 1USD per style via Paypal to try to recover some of my initial outlay - I do not charge for the time to create these "guitar" styles. Also you'll need to up/downgrade to OS5.2A for these to work on your Audya thanks to Ketron. I have this available for all the different Audya models for anyone interested.
Make sure you'll fly forever!