Poor balancers but good stickers? (9)

I believe the answer is:

barnacles

I'm a little stuck... Click here to teach me more about this clue!

'good stickers?' is the definition.
'barnacles' can be an answer for 'stickers?' (barnacles stick or cling to rocks). I am not certain of the 'good' bit.

'poor balancers' is the wordplay.
'poor' indicates an anagram.
'balancers' is an anagram of 'BARNACLES'.

'but' acts as a link.

Can you help me to learn more?

(Other definitions for barnacles that I've seen before include "Geese" , "crusty lodgers" , "Balancers for shellfish that stick to hulls" .)

I've seen this clue in the Sydney Morning Herald.

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