I came across this sentence (from the Core 1000 material of iknow) while learning vocabulary:
彼女は青い目をしています。 She has blue eyes.
Doing some searching I found this answer explaining that ～をする can mean 'to have some characteristic'.
Before that, I only knew of the following construction to express such:
～は～が～。 彼女は目が青いです。 She has blue eyes.
Is there any difference in meaning/implication between these two different structures? Or can I use them interchangeably in any circumstance?