DB (BI), I used Tru-flight feathers on an offset for a year and there is no noticable wear on them ! I am not trying to be sarcastic when I say that you aught to try one ......I don't think you would see as bad of effects as you think !!

Contact is the WB's friend !! It gets equal and opposing pressure on all sides ! If you think about it .....it can't kick too much.....because the opposing pressure will stop it ! Out of tune yes.....but not nearly like getting contact on a prong style rest !