If you have space and budget for extra roofed space for the chickens I don't think you can EVER go wrong with it. It can be winterized to give a less-unpleasant January playground; it gives you summer shade; it greatly reduces mud, and by doing so, reduces flies and odor too; and as long as the walls are attached carefully it is also nicely predatorproof. Definitely go for it!
You may find it needs a bit more wintertime ventilation than you expect (my plastic-covered lean-to run does, anyhow) to avoid condensation and humidity, but that's no big deal.
If there'll be no snow on the ground, you'll probably want to cover the ground with at least a few inches (or more!) of something kinda insulationy, like dried leaves or straw or hay or suchlike. Bare frozen ground is really cold on chickens' feets, as is cold sand or gravel; organic matter is MUCH MUCH warmer for them to walk around on.
Have fun,
Pat