As I understand Greg’s post...... he already has the 650 cam and the 1.7 rockers....... hence the inquiry.

It will obviously work...... up to some rpm.
Whether that rpm is high enough to work satisfactorily for what he’s doing is the question....... with only one real way to answer it.

If buying new, a nitrided SFT cam isn’t enough of a cost savings over a roller to make the gamble worthwhile IMO.

There are plenty of higher RR friendly lower lift roller lobes that would ultimately be a much better option........ but that requires spending extra $$$.