My coach has Andies and Andy and lusitano crosses. I’ve been to a couple of Andy breed shows, once as judge’s helper , so watched two ten hour days!
I love love love what I’ve seen in that they are cattier than even a quarter horse and then shine in upper level dressage. They also are generally friendly and people oriented, though they can be hot too.
They however do not tend to have the long warmblood stride that is so popular in the dressage arena now and tend to do better with more training to extend. They are less likely to win Training level on the base of gaits and promise I think.
Also as with all breeds there is variation in natural stride length and suspension.
They are not typically used as jumpers but can certainly compete under 3 feet.
You can also get very nice Andy or lusi crosses with TB or warmblood, if you want more sport horse. The most common cross is with qh, the quality of which will depend on the qh factor. Seen nice ones that look like Andies, others that look like qh. The sport horse crosses I’ve seen are very Iberian, don’t look at all TB or WB.
I took on a Paint, but would definitely upgrade to an Iberian if something happened to her. She had a stunning half Andy collt early in life, so I’m also considering maybe trying the build your own Iberian route at some point.