I just finished watching the end of season 2 last night and I can only hope they continue with this show.
The entire cast is brilliant and has wonderful chemistry.
I enjoy the combination of drama and comedy. The stories are interesting and I did feel like I was on the edge of my seat with several scenes, but the comic relief was unexpected and worked perfectly. They also managed (in only six episodes per season at that) to flesh out the characters and their relationships with one another.
Christopher Walken was wonderful here. I enjoyed Stephen Merchant's character as well and was surprised to find out that he actually created the show.
Wrapping this up, I enjoyed The Outlaws immensely. Witty, entertaining and just fun to watch. I hope they'll be more seasons to come.