I know this is generic. But what if I threw in conjuration and made him kind of an evil summoner too? Does that seen lore friendly?

As far as I'm concerned "fun" is more important than "lore friendly." If you find the idea of a conjuring Orc intriguing, then I think you ought to do it. Personally I don't let Bethesda's lore stand in the way of my fun.

Lore is pretty mutable in this series, anyway. Bethesda changes their lore more often than my paternal grandfather changed his underwear.

OK. But aside from that, do you think it's lore friendly?

Some people might say "no" because they don't envision orcs as magic users, but... most strongholds I believe have a "shaman"l who uses magic and summons or communicates with Malacath so the simple fact is that orcs can and do use conjuration magic. Si9nce Bethesda created these shaman, I'd guess they are lore friendly.

Why won't it be? Unless all Orcs have a hive mind mentality, they are all individuals that can do what they please and everything will fall under "lore friendly" the same applies for all the races and occasionally you'll see NPCs that go against the stereotype.

There's also an Orc necromancer in Morrowind that plays a part in a big quest.

Basically in the TES setting, any skill you pick for a race is lore friendly.