Your search is over, you don't need anything else to accomplish what Akvis Sketch can, along with your beloved Photoshop. I found the answer with this excellent plugin.

Nothing compares to Akvis Sketch. I have tested almost every competitive product available. Akvis Sketch is by far the most accurate and detailed. I have tested it against other Photoshop plugins, Photoshop action scripts, and standalone applications. I have been using Photoshop since the day they released it, and am currently using version CS4.

If you are an Adobe Photoshop fanatic, and you want the ability to extend Photoshop into another dimension, do yourself a favor and download a trial copy of Akvis Sketch and test it out for yourself. I'll bet you end up purchasing Sketch. You will not be disappointed. It is well worth the price. Don't waste your money purchasing another program to do what Akvis Sketch can, along with every professionals favorite... Photoshop.

Stay tuned, as I will be downloading, testing, and reviewing all of the other Akvis Photoshop plugins and posting my results.