Glock 19x MOS vs 47

Looking to get a new gun for the battle belt setup for USPSA and just to have as a go to pistol. I like the bigger Glock 17 style grip but wondered if there is even any benefit or downsides to the extra slide length of the 47? The barrel lengths end up being the same with the threaded barrel on the 19x MOS so the only difference is the slide length is longer on the 47. What are some of your thoughts?