I switched out my stock ap2 slave cylinder for the ap1 part and prefer the shifting feel in lower gears without the cdv. It will allow you to shock the driveline when you make a mistake with the clutch though. Keeping it on doesn't honestly hurt the shifting significantly either.

 

I removed mines at ~153k miles and installed an AP1 slave cylinder. 3k miles later, I much prefer it. Wish I did it a lot sooner.

If it is strictly daily driving and not doing anything aggressive, the CDV is fine. I only started recently autocrossing and tracking more.

 

You can absolutely have AP2 slave cylinder and be aggressive, I never ever have slip issues, just learn to drive the car as Honda designed. What I mean?

It's not just the slave cylinder, you have to look at the gas pedal too, Honda states to have 3/16-1/4" deflection in the throttle cable, not super tight, by design. You need some 'slack' in the gas pedal, just like the trigger on a weapon (you need a bit of slack in the trigger), you learn to take that slack out and it's there for a reason...it teaches you better feel, and you can start fine tuning how you use the gas pedal. When you start getting more foot feel, you'll start using the balls of your feet more (dancing) vs Bigfoot mash pedal...Also, you need some pedal feel from your foot, if you're wearing a big gummy sneakers, you loose pedal feel, most people use their whole foot or leg and mash/stomp on pedal. Wrong, look at old school test drivers, wear leather soled dress shoes, so they can feel everything through their feet via the pedals (because you're dancing with the car around the track).

https://www.youtube.com/watch?v=H5FNEhF3b7I

What does this have to do with the slave cylinder? Well, the other part of the equation is the slack in the slave cylinder, if you learn the gas pedal with some slack, and now you have some slack in the clutch pedal, you need to learn to dance with your partner, learn to take the slack out as you drive, it teaches you to learn much better pedal feel and response, learn to dance with your girl (S2000)... She's already set up beautifully and this slack is by design so you don't burn your clutch out.

20 years of hard daily driving, 2,500 miles mostly Big Oval at Willow Springs, and 30,000 2 year cross country road trip on original clutch. I launch DAILY, VTEC non stop, I can count on one hand which days in 20 years I didn't VTEC (hint, first 600 miles breakin period) I bang the living shit out of my pedals. And I never slip, and I can get the tires to sqwuak going into both 1st and 2nd gear. All stock setup.

I love my slave.