Actually I have and they work well to dress things up, especially considering the price..

You may want to avoid the type pictured at the top with the angled gear, as it is hard to match the strut wire to the plastic bend.

The straight ones are easy to install and you can cut a slot to encompass the wire spring.

The Robart web page has a PDF file that shows how to do this.

I recommend you get the plane flying before you install them. They can be easily retro-fitted later.