Not sure which thread you saw, but Claws/Dark should not have major issues with survivability. Dark Armor is solid for survivability but does have a glaring hole to Energy Damage dished out by pylons. This is easily plugged by IO set bonuses that provide Energy/N. Energy defense.
Claws/DA is arguably one of the strongest Dark Armor scrappers you can build. Claws attacks are generally cheaper on endurance than other Melee choices and easily allow for sets that grant S/L/E/Ne defense bonuses.
Plan out your build using a Hero Planner. You can post those in this thread and folks can make suggestions on how to improve it.
Claws/DA is a solid and very fun set to play. You do need to learn how to play Dark Armor, for which I recommend reading the DM/DA guide in my sig. It's a tad outdated, but most of the information there will give a big let up in understanding Dark Armor.
SI Radio has many DJs and listeners whom hold City of Heroes close to their hearts. We will be supporting many efforts to keep CoH ALIVE!!
Working on a claws/dark toon. I have done some reading on the combo. From what i have read i am going to have problems with survivability(this was from a post about claws/dark in i15) when trying to solo pylons and AVs. Is this still true? Also looking for some info on IO builds. Any help is good.