Don't forget that both of these can be enchanted as though they were armor. You can load up on a pretty impressive AC and defensive abilities this way.
Not AC, since the enhancement bonuses to AC won't stack. But you can get a few nice enchantments none the less.
Either way, now that you're looking into IF as a damage source, you might want to look over all the various ways to flat foot people. A lot of skill tricks do it, making them a lot more valuable than the guide currently claims. The Blurstriking enchantment, Grease, and simply going before the enemy has a chance to act are probably the best and easiest ways, but there's a ton out there.
Also, don't forget Craven as a damage source. Remember, Factotums do get sneak attack as a class ability for where it matters.
And the best part about playing with a Gnomish Quickrazor? You can use all the art for Assassin's Creed as art for your character art. Neat.
JaronK