My Pale Masters don't use Sceper of the Fleshweaver/Ogre Magi because its Transmutation focus.
Certainly, disintegration is important, but not that important.
Yeah, but one of them has a +5 INT attribute, and when combined (can't remember the recipe) it provides a staff with +6 INT. In some ways it saves having to ferret around for an item that gives you +6 INT in that level range. However, it does require some amount farming though.