I know small arm worn shields cap out at good protection when worn, but do they usually loose protection if they are good to start with when you wear them? Below is a crafted sipar that looses protection when worn and a ordinary shield from Hibarnhvidar shield shop that apparently does not.

crafted sipar:

This shield is small in size.

You are certain that the sipar offers rather low to good protection.

You are certain that it could do:
no puncture damage
no slice damage
somewhat heavy impact damage

You are certain that the sipar is decently balanced and is poorly suited to gaining extra attack power from your strength.

You are certain that the triangular sipar is rather reinforced against damage, and is in pristine condition.

The triangular sipar is made with metal.
It appears that the triangular sipar can be worn on the left arm.
You are certain that the triangular sipar weighs exactly 42 stones.
You are certain that the triangular sipar is worth exactly 250250 kronars.
Roundtime: 8 seconds.
>
>wear sip
>
You slide your left arm through the straps on your triangular sipar and flex, gaining a feel for the sipar's weight.
>appr sip
>
You are certain that it imposes insignificant maneuvering hindrance.

This shield is small in size.

You are certain that the sipar offers rather low to moderate protection.



Hib small shield:


>appr shield
You are certain that it imposes light maneuvering hindrance.

This shield is small in size.

You are certain that the shield offers rather low to good protection.

You are certain that it could do:
no puncture damage
no slice damage
moderate impact damage

You are certain that the shield is decently balanced and is poorly suited to gaining extra attack power from your strength.

You are certain that the ordinary shield is appreciably susceptible to damage, and is in pristine condition.

It appears that the ordinary shield can be worn on the left arm.
You are certain that the ordinary shield weighs exactly 50 stones.
You are certain that the ordinary shield is worth exactly 225 dokoras.
Roundtime: 8 seconds.
>
wear shield
>
You slide your left arm through the straps on your ordinary shield and flex, gaining a feel for the shield's weight.
>appr shield
You are certain that it imposes light maneuvering hindrance.

This shield is small in size.

You are certain that the shield offers rather low to good protection.

>do they usually loose protection if they are good to start with when you wear them?

Yes they do.

It is a weird system where there are some that do and some that do not.

The line between might be crafted or not crafted.

I don't think I've seen any crafted small shields not drop in upper protection when arm worn.

My personal experience does not extend to any other shields besides small.