Hi Momol
I grew them last year, much preferred them, creamy white flesh, almost avocado like, very delicious. Grew some more this year, but plants were too big when I took them up the allotment and damaged them beyond repair so had to fall back on "ordinary" courgettes which were nowhere near as good.
don't know if it was the hot weather last year, but one plant kept me busy in the kitchen, trying to think up new ways to cook them.
I've got my seed to grow some more next year. Mine are from Real Seeds and it's called Trieste White Half-Long Cousa Courgette.
And they describe it as Bulbous courgette, orginally from the mid-East. Very pale green, almost steel gray. Strong bushes, quick and early with high production.
Would recommend it.
best wishes
Sue