Get the S2 OR and try it. If it's a hot commodity in your area, then if you find you don't like it, then you can always sell it.
The advantage is that it's ready to go... swap out the plates for iron sights, or a different optic whenever you want. There is a significant cost to get your current slide milled. Plus the downtime you'd have while you're waiting for it to be done.
They do handle and feel different. So that's subjective.
Finding the dot is all about practice.