It comes down to interpretation perhaps ?
Does a two school spell require elements of both schools to function ? (Some kind of school fusion)
If so: your specialist couldn't cast them.
Can a two school spell have two versions, i.e. can it be made to function either way ? (Kind of like convergent evolution)
If so: your specialist could cast them.
YMMV, so you'll have to ask your DM.
__________________
π = 4
Consider a 5' radius blast: this affects 4 squares which have a circumference of 40' — Actually it's worse than that.
Completely Dysfunctional Handbook
Tomb of Battle: Fighter, Monk, Samurai, Blade Dancer, Knight, Swashbuckler and Ninja.