This short story was written as part of a book called Unfettered. This book is well worth a look as it has a few writers who aren't to bad at throwing a couple or three sentences together. 
 The Jester is a quick fast paced story that once again has our intrepid heroes accepting a job that drops them, literally, in the deep end. Whilst the story line is pretty simple there are some decisions to made, once again, life and death decisions, that play very nicely on the personalities of our two friends. I thought that Sullivan was well disciplined with this story. I assume that it was written recently and it would have been easy to write the characters as we know them now. But he was able to 'bring back' the old Royce and Hadrian from the early books and I loved reading them again to see how much they had changed. 
 The intro to the book states that you don't need to have read the Riyria series to enjoy this book, whilst that is true, I think that a big part of the fun of the book is the relationship between R and H and whilst you may 'like' the story you'll not get as much from it as you could. It should at least pique your interest enough to buy the series. 
 I listened to this on audio. Once again, Tim Reynolds does a wonderful job and I completely unreservedly recommend you get yourself into some Riyria and watch a talented author grow with his story.