Is it different in equity and intraday?
No, it would be the Karta only. The context of the question is to differentiate between investing via an HUF and trading via a HUF (be it intraday/f&o). Investing is passive and is trading is active which can be argued by the income tax authorities for clubbing it in the income of karta rather than counting it as huf income.
So the question is: Is trading in general (be it f&o/intraday) via HUF advisable – would clubbing of income be an issue there?
@Deus12 It is very common to have a business under HUF in India. So yes, trading is allowed however, clubbing wont be applicable as a proper business ( trading in F&O ) is being done here.