/3/ - 3DCG

>>537591
Looks good and if it works it obviously works.
However I would normally refrain from using clusters like that. Especially since it's also possible using joints.

>Make an arm like normal, shoulder, elbow, wrist joint, IKhandle.
>Build your noodle joints with spline IK
>Parent your noodle joints to the actual joints.
>When skinning your model, put all the skin weight on the noodle joints.

as you noticed I used 2 clusters, but those are only for controlling the points of the splines, not actual mesh.
You can make it as bendy as you like depending on the amount of joints, spline points and clusters.