I like sketch, travel sketch help me to remember the scene, the feeling and the mood much better due to I can selective sketch where to focus and where to discard from the scene.
Recently, I experiment the new form of travel sketch, mix from my travel photo snapshot with sketch and partial water color painting.
The effect and the speed is much faster than the manual sketch, as long as have the right photo being taken on the scene, the rest is just a mater of post processing.
Some experiment of the travel sketch made this way present in this gallery.
Feel free to comment.