Np, ninjitsu seems to be the "it" skill right now, and as it should be, it's a very fun skill to use, and not overpowered. Also another key note i forgot to address. Your chance to hit with a deathstrike pertains a lot to ninjitsu skill level, but also to your HCI and weapon skill level. If you're 120 swords/wrestle/fencing/archery, with 45 HCI, you'll land your deathstrikes more frequently.

I'm currently working on ninjitsu as we speak, hitting a golem. Working it on my mule dexxer(he's stat'ed up but all he does is work skills), and i'm going to stone it over to my archer, since I don't want to waste all those arrows.

edit: forgot to mention macing as well, lol.