It just occurred to me that Combat Styles, the top 2 tiers, at least are going to be very hard to achieve, simply because of how much XP you need to get the required number of ranks in the Lore skill.
Remember, you can have a max of 1 rank for every 20 XP (or portion thereof), so a starting character (100 XP) can have a total of 5 ranks.
in the rules, you need 6 ranks for Tier 3, 10 ranks for tier 4 and 15 ranks for tier 5 (the progression was 1+2+3+4+5 to give the total number of ranks needed).
so to get tier 5, you would need a minimum of 281 XP.
101-120 == 6 ranks ==Tier 3
121-140 == 7 ranks
141-160 == 8 ranks
161-180 == 9 ranks
181-200 == 10 ranks == Tier 4
201-220 == 11 ranks
221-240 == 12 ranks
241-260 == 13 ranks
261-280 == 14 ranks
281-300 == 15 ranks == Tier 5
Is that too much?