My issue is that there are enough subtle rules changes that if someone has the guidebook and someone uses the handbook, then the characters won't be consistent. <sigh>
Imagine two players with Vargar Professional characters show up to join your game. Both are from desert homeworlds and both have 10,000 EXP points. One is 4th level and one is 5th level. One has Spot at rank 8, yet the other is limited to a maximum of 3 Ranks in Spot. Both have purchased the same feats with their level and class bonus feats, yet one has taken Skill Focus at 4th level, the other does not. Both characters are made with the rules as written. Sound's like the start of a bad riddle, right?
Seriously, is this a result of play testing, or just lack of consistency between printings?