Yes, there is an official Wiz release of BennuGD in the main page, fully working without needs of GINGE.
But for GP2X, there are two unofficial releases made by me of an old version (but stable and fully working): one for official firmware, and another for Open2X firm. Also is possible they works on Wiz without GINGE. They are on internet, but I can't remember where I uploaded them ^^U (I think they are on openhandhelds web).
If you are still interested, I can upload again here or elsewhere. Just let me know.