ToME: the Tales of Maj'Eyal

I just got a Ghoul Reaver to Lv. 20. My first Cat point went into inscription, but sent then, I've gotten both Light and Tinkers as options for my second Cat point. Quite honestly, I've never had to make this decision before, and I'm sort of baffled as to which to get. My first instinct is Tinkers, because Undead, but I thought I'd ask here and see if anybody has any insights for me.

Tinkers is much stronger, especially for undead.

Reaver has unusually large synergy with Light, since Bathe in Light and Providence shore up the weaknesses of Bone Shield quite nicely, they actually have good spellpower and they even give extra attacks in melee. I might consider taking Light before Tinkers on Reaver.

On the other hand Ghoul really really really wants Tinkers so I'd still take that at 20. I'd still go Light later, probably. With Tinkers/Light/Rot you'd only have four inscriptions but that's fine imo.

Thanks people. With so many options, I sort of felt paralyzed.