Overall they sound rather neutral if not somewhat boring. So yes, they probably are decent monitors. I am using the "neutral" mode in the X7 control panel as ist increases perceived sound stage without sacrificing detail, in direct mode the presentation is rather congested and "in front of you". In neutral mode the overall tonality is somewhat similar to what I remember of a pair AKG K702s I once owned.
However, if I am being honest, I cannot give you an educated opinion on that. These are my first somewhat better speakers. They are the best speakers I ever owned, but that doesn't say much. Bass isn't the strongest, but precise. Detail retrieval and instrument placement are good. They work great for Jazz and classical music. For multiplayer shooters I prefer headphones, though. The elevated highs of my Beyerdynamics help me pick out steps much better.
I can compare it with:
Creative T40.
Hands down better overall. While decent for their size the T40 still have the typical tinny "small speaker" sound signature and lack any kind of subbass.
I do recommend them, they pair nicely with the X7, build quality is solid and they still should fit on most desks quite well. I can however only guess wether one could buy better passive speakers for the same kind of money, especially on the used market.