To clarify, here's Spica's response to my question on their forum: http://www.spicapublishing.co.uk/phpbb3/viewtopic.php?f=90&t=2505
I agree with Dragoner, my character was blocked from using the career books as he would have had an unfair advantage over others not using them, in hindsight I'm not so keen on the doubling of basic training skills, it would be pretty easy to drop this addition, the careers themselves I like.