I chose to install mine vs paying an upholstery shop $500-$600 to do it for me. Not really difficult, but time-consuming. Also, there is a lot of pulling and stretching and clipping and unclipping plastic thingys (mine is a 2012, so no hog rings like the earlier seats). Your fingers will hurt for a few days afterwards, but when you are done, it's worth it (but you won't want to do it again-ever).
I took my time. Took the back seat out first, took it in the house, put on a movie and went at it. Took me all day, but had no clue as to what I was doing when I started. As you take the covers off, you will see how to put the new ones on. Reinstalled the back seat and took the passenger seat out. Mine is a daily driver, so I drove to work a couple days without the passenger seat (worked on it in the evenings after work). Took a couple days off work to do the driver's seat, but by then, it only took a few hours.
those came out great for doing it yourself! Looks professionally done IMO. I would be afraid of wrinkles and stuff that would need to be worked out. That blue suede is amazing looking. I was looking at the red suede but I have been on the fence about how well it will age. Mine is a DD too.