is there any issues with the "non genuine" rwd pumps at all?

i bought a hp t25 pump fråm ds motorsport, goin to mount the lid from my existing pump, saved me about £50 from their rwd pump and more than £100 from the genuine cosworth pump.

but its not tested yet so cant give you any experience on it, the yb is just a pinto from the beginning and they seem to work fine on them so cant really understand why i would waste my money on a logo?