Locomotion checks

What will be the best practice to check for locomotion?? Are those extra checks in the second example worth??

1)

Code (CSharp):

1. private void StartTurn(Vector2 position)
2.     {
3.         float rotation = turnSpeed * position.x;
4.  
5.         if (Math.Abs(rotation) <= Mathf.Epsilon) return;
6.        
7.         XRRig xrRig = system.xrRig;
8.        
9.         if (xrRig)
10.             xrRig.RotateAroundCameraUsingRigUp(rotation);
11.     }

2)

Code (CSharp):

1. private void StartTurn(Vector2 position)
2.     {
3.         if (!CanBeginLocomotion())
4.             return;
5.        
6.         float rotation = turnSpeed * position.x;
7.  
8.         if (Math.Abs(rotation) <= Mathf.Epsilon && !BeginLocomotion()) return;
9.        
10.         XRRig xrRig = system.xrRig;
11.        
12.         if (xrRig)
13.             xrRig.RotateAroundCameraUsingRigUp(rotation);
14.  
15.         EndLocomotion();
16.     }