My first question is what is to be gained by forward sweep? Other than to have a different looking airplane, there is no real advantage and several disadvantages to swept forward wings. The first drawback is the effect on stability. A swept back wing has positive lateral stability in that it will tend to roll away from a sideslip whenever it is generating lift. (When operating at zero lift it generates zero rolling moment so in conditions such as knife edge flight there is no roll coupling.) One benefit of this is the ability for a swept back wing to be laterally stable both right side up and inverted without any dihedral. On the other hand, a swept forward wing with no dihedral is laterally unstable.

Another problem is structural. A swept back wing tends to deflect in a direction that reduces flight loads while a swept forward wing tends to deflect in a direction that increases flight loads. This requires that a swept forward wing be more rigid to avoid such things as flutter.

A simple straight “plank” wing has neither the advantages nor problems associated with sweep, and is a good choice for general sport flying. A swept back wing is a good choice for an aerobatic airplane because it offers good handling in positive and negative g flight while it minimizes roll coupling in knife edge flight. A wing with forward sweep has no particular advantage to offer.

Can a swept forward wing be made to fly? Of course it can. If the sweep is moderate is shouldn’t present any serious problems, but it will likely be a little touchy to fly.