It’s entirely up to you and also depends on the size of the IC. If you feel that taping an IC to a stencil is what makes you feel comfortable and holds the IC in place, that’s definitely ok. I personally use Kapton tape (heat resistant tape) . I have done both ways a few times and after you get a hang of it, you just kind of become used to it. It is ideal to tape really small chips that have a decent sized ball grid array to the stencil.