Actually, I'm playing through the OC right now with a Weaponmaster and having a great time with him. It is a viable build for the OC, if not the "best" build. Here's a stat sheet on what I've done so far.
Human, true neutral.
Str 17
Dex 13
Con 14
Int 14
Wis 8
Cha 8
1) Fighter. Weapon focus, Dodge, Mobility. Discipline=4. (16 skill points left over)
2) Fighter. Expertise. Discipline=1, (20 left over)
3) Rogue. Power Attack. Disarm Trap=6, Intimidate=4, Open Lock=6, Search=4, Tumble=5, UMD=6.
4) Fighter. Str+1. Discipline=2. (3 left over)
5) Fighter. Spring Attack. Discipline=1. (7 left over)
6) Fighter. Whirlwind Attack. Discipline=1. (11 left over)
7) Weaponmaster. Discipline=1. (15 left over)
Rogue. Str+1. Disarm Trap=5, Open Lock=5, Search=6, Tumble=5, UMD=5.
9) Weaponmaster. Improved Critical. Discipline=2. (3 left over)
10) Weaponmaster. Discipline=1. (7 left over)
11) Weaponmaster. Discipline=1. (11 left over)
12) Weaponmaster. Str+1. Cleave. Discipline=1. (15 left over)
13) Rogue. Disarm Trap=5, Open Lock=5, Search=5, Tumble=5, UMD=5. (1 left over)
14) Weaponmaster. Discipline=2. (4 left over)
15) Weaponmaster. Great Cleave. Discipline=1. (8 left over)
16) Fighter. Str+1. Weapon Specialization. Discipline=1. (12 left over)
Once you get past the 3rd level of Rogue at level 13 you don't really need to save the skill points anymore. I was putting them in Lore after that. I'm still in chapter 3 and having a pretty good time with this character. I took the Rogue levels at 3, 8, and 13 to compensate in UMD for the -1 modifier in Cha.
It was just for fun. ;^)