There may not be much weight on a front wheel of a chopper, and the 2X1/4 is stong enough to hold the bike up, but it is not strong enough sideways!!! It will bend sideways very easily, and that affects steering, wheel stability, and safety.
It will also weigh more than a tube fork at a guess , as 2X1/4 weighs close to the same as 2.5 dia inch tube with 1/16 thickness. And thats a a big fork tube. It may be possible to get an oval shaped tube that would be more suitable, and get close to the blade look you are after.
If you told us the length of the fork, it would help !
Steve G, Beijing