Peteski: Yes, Yes, and Yes. The KD HOn3 couplers came first, but nort by much, and the N 1023/1025 is a scaled-down version of them. The two work very well together, and many HOn3 modelers use the N scale couplers. especially since the now come in so many varieties.
Incidentally, the HO and N couplers will work together, at least as far as coupling!