T-Splines is great but when modeling a rather complex object and you want to perfect the flow you need to look at the individual loops sometimes.
Here is a Blender screenshot sculpting a basic cloth iron body for a demo.
The mesh is not too dense yet too complex is the shape to easily check the loops and flows
isolating the selected loop (hiding everything else) makes this task a lot easier.
Now I can rotate around that loop evaluate and adjust it.
In blender this is done via Shift H - hide none selected!