Hello Yousaf. Applying the SubD is just to have more geometry. For sculpting you need a lot of verts so you can get the shapes you want. If you don’t have enough resolution, then areas that need finer detail wont looks as good. And the second one, yeah you’re just over thinking, it makes no difference. Everyone has their own unique way of doing things in Blender. Some of us can’t let go of bad habits, muscle memory is too strong.
