We have the Schwintek system in our Solaire. One large living room / kitchenette slide, one small kitchen slide. The small kitchen slide mechanism had to be rebuilt by the dealership. The motors were out of sync and eventually destroyed the rails and seals, which also caused a water leak.
I met with the Tech who performed all the work and he explained that the number one cause of issues with Schwinteks is operating the slides with low voltage; i.e. not plugged into shore power and operating off a weakened battery. He STRONGLY suggested to not operate the slides unless your battery is fully charged or, again, you're plugged into shore power.
As for our much larger living room / kitchenette slide, no issues so far in 2 1/2 seasons of camping. Personally, I'd rather have a more traditional slide system like we had in our previous camper. The Schwinteks are too complex and there's not much the end user can do if a failure occurs. When the time comes to purchase a new camper, it will NOT have Schwintek slides.
Good luck and please let us know how things turn out.