Yep i have been useing them for about a year now.Great vains.
As been stated they are great for field tips,and i believe they would be good for macanacls.I don shoot the mac,so i havent tryied them.
If you shot through a WB.just be sure to put a drop of glue in frount and back of vane to keep them from being ripped off,you should do that with any vain and with feathers.I have tried them with the G5 montic and they flew real good,BUT,with other broadheads they didnt do as well for some reason.Im going to try the next size up, and will let yas know how they preform with different heads.pan.
ps i know my spelling is not very good.