When it comes to effective range (ie distance to minimum expansion velocity) its surprising how much even a small increase in velocity will have with effective range.
124gr XTP 0.165 G1 BC; minimum reliable expansion velocity 1050fps, 1100fps desirable, 1150fps optimal
G19 Velocity = 1175fps
G17 Velocity = 1200fps (+25fps)
https://bergerbullets.com/ballistics-calculator/
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G19 @ 1175fps = 1150fps @ 10yd; 1100fps @ 34yd; 1050fps @ 63yd
G17 @ 1200fps = 1150fps @ 20yd; 1100fps @ 44yd; 1050fps @ 73yd
So +25fps is actually a +10yd effective range advantage. And it ensures hitting at a solid 1150fps out to 20yd instead of 10yd.
This isn't a game changing advantage, but it's also not one I'd willingly trade away if I could avoid it.
Thats why seeing dudes with G45's with X300's makes me go Hmmmm - they've got a G19 slide / ballistics with a gun thats now G34 length due to the WML...