Rue wrote:I've always wondered if that "wicked dwarves" line wasn't a little influence by his buddy Jack.
More than likely it was an attempt to link
The Hobbit with the unpublished
Simarillian in some small way.
It has fascinated me too that after the war of the Dwarves and the Orcs (T.A. 2799), the survivors of the other houses seem a bit disillusioned with Thráin due to their losses and a lack of rewards. "But now, if we must go without the rewards and the weregilds that are owed to us, the sooner we return to our own lands the better pleased we shall be" (LOTR, Appendix A, III Durin's Folk).
It takes little imagination to think that there may have been a few dwarves who, with the promise of treasure, made alliances with orcs thereafter, rather than with their own kin.