So after a completely unrealted discussion of forward and side slips, does anyone have any input on the question initially asked?
If I undetstood him correctly, he is wondering if you're putting yourself in danger of a low level spin when slipping in?
I would think yes and always keep the speed up for the same reason (and because ASI becomes less reliable), but I don't recall seeing any accident reports where a spin happened from a stabilished slip approach (with decaying speed, so not totally stabile)