Steve,
FWIW - I have used a tapered tip nickle edge warp from the beginning on our plane - and, the nickle edge has done quite well for durability.
The Nickle edge was primarily designed for float planes to reduce the erosive effects of water spray on the prop - I ended up with the nickle edges simply because it came with the prop I got - but I do like it - so far no nicking or dents other than inconsequential/minor.
Sincerely,
Dave S
KF 7 Trigear