Well that stinks.
Though I personally think that as an ambush and scout unit swords would be more useful. Realistically you want to occupy the smallest space so that it is harder to notice you, have the least possible weight so that you can close fast, and a weapon that is variable for defense and offense.
Spears just seem too clumsy for scouts and ambushers to use (which is what their description implies). I was also wondering, why give them the spear, if they only have 31 soldiers (124 in huge, 62 in large)? a cavalry charge will make them hurt badly (especially if you can organize it alla Return of the King (a huge long line only one or two deep)), so making them an anti-cavalry unit just seems like it detracts usefulness from the units.

Just my two cents. But, just to know if this is bred form ignorance, how good are they compared to Cohors Reformata? How do they compare to other faction's elite units?